Tuesday, October 13, 2009

An explanation on temporary blog failure....

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Folks, there are about 20,000 people a month who stop in here to browse around. An amazing percentage of you spend more than a few minutes reading my poor offerings, and for that I am grateful.

It's because of that, that I feel I should explain my lack of blogging lately.

I'm a teacher. I instruct high school seniors in the fine art of automotive service, thus my moniker of 'Carteach0' (Carteach was taken!). Well.... this school year is more challenging than ever before. Not only a great new batch of students to guide (44!) but new requirements from the state and the administration that have little to do with actual teaching. All of that extra work comes straight from personal unpaid time, as every teacher is already overloaded 180% on what can be done in the school day.

Add in.... I'm taking two PSU courses at the same time, required to gain my teaching certificate and keep my job. That's six credits, three of which are for a class I can't even tell you the meaning of.... it's just 'required'.

All this whining means no shooty for old Carteach0. No reloading. No playing with boomsticks at all. The long and short of it... I'm in survival mode and struggling to get done what I must. Since I only write here about what I do myself, with nothing 'creatively created' or 'borrowed', then it means I'm not posting.

I'm sorry folks.... but take heart. I will get back in the saddle one day. It will probably be spring, but it will happen I'm sure. Thanks for hanging in there!

Many regards,

Carteach0




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Saturday, August 29, 2009

Glock 30 update....



Another 200 rounds went downrange this morning from the Glock 30. It was a flawless display, with not one hiccup for me to report on. Even the hotter .45acp hand loads were handled with aplomb and grace, and the weapon is very easy to control.

It's boring to have nothing to report on but perfection. I've been carrying the pistol every day since it's first range session, and have perhaps 1000 rounds through by now. So far, my one and only complaint is that Crimson Trace does not make a laser for the G-30 SF model yet, and won't even review the idea for at least three months (CT engineers only meets quarterly to discuss new models).

It's a smoothly functioning machine, almost boring in it's predictability and dependability. Exactly what one desires in a defensive weapon.

I approve.

On another note, today I discovered that my cheapo paper plate targets offer me a training option at the range. If I attach them to the backer with just the very edge of the clothespin, the target falls off after just a few hits. That means I hit it, it falls down, and I move on to the next target which is a royal pain in the behind until I call it a reactive target and shoot it as such.

"Bang bang bang (fall down) transition.. Bang bang bang (fall down)..... he he... impromptu and cheap fun. The other folks in the next bay looked around the berm, saw all the trouble I was having keeping my targets stuck up there, and offered me more clothes pins........

I don't think they understood why I was laughing.


Friday, August 21, 2009

Dealing with Flinch... one method (Repost)

(This re-post is the result of a recent range session. I was helping a new shooter with some minor issues, and I recalled writing this over a year ago. Perhaps it will help someone......)


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Today I got a chance at some range time, and thought I might discuss working on basic shooting schools. In this case, flinching and failure drills.

Dr Helen posted about a gun-bloggers get together. (It sounded like a great time had by all!) In her posting she mentioned an issue with flinching, and that started me thinking.

Flinch, or what might also be called 'anticipating the shot' is a problem where accuracy is concerned. In bad cases, it can can throw shots right off the target. With long arm or pistol, it can happen to anyone. It occurs when the shooter becomes conscious of the recoil, and reacts to it before it even happens. Rather than letting the weapon recoil naturally, the shooter pushes into it, throwing off the round before it ever leaves the barrel.

In it's very worst incarnation, a shooter can actually be scared of the recoil, and 'flinch' can be massive. While most every shooter can physically handle most any small arm within reason, a horrendous flinch, once learned, can be seriously difficult to get rid of. It may be one of the most common reasons new shooters, who started out with too large a weapon and poor training, give up the sport.

New shooters should usually start with small caliber weapons, so skills can be worked on without having to deal with recoil. The classic for this role is the trusty old .22. Cheap, quiet, accurate, and with almost no recoil at all, it's the traditional way for new shooters to learn.

Highly experienced shooters often return to the .22 for target, plinking, and solid skills practice. Some shooters never leave it behind in the first place!

Here is a short video demonstrating the offending act. The pistol is a large, heavy, magnum, often found at the source of flinching. Notice the muzzle drop as the hammer falls on an empty chamber.... that is flinch.



I'm happy to say... I did that on purpose. I worked through most of my 'flinch' issues long ago. That said, even the slightest bit is harmful to precise shooting.

The video itself shows a useful way of working on shooting skills. Just the same as all major athletes review video of themselves, there is something very helpful in seeing ourselves in action. A watchful coach on hand can point out problems and solutions, but actually seeing yourself is priceless.

There are a number of ways to train away a flinch. Classic among them is simple dry firing. With an unloaded weapon, and no ammunition in the room, preferably by yourself, and with a safe bullet absorbent wall... (get the idea that safety is important?), now choose a small point on the wall at comfortable height. Aim at that point, practicing squeezing the trigger. Ideally, the sights should not waver as the striker/hammer impacts. Pictures are good, but just a tiny piece of tape will suit fine.

This is particularly dramatic over a distance of twenty feet or so, with a laser on the weapon. Watching that red dot dance can be very instructive! Do this kind of dry fire practice daily if possible. Even ten minutes a day of trigger and sight practice can prove very effective.

Now, some methods of flinch training on the range are the subject here. So... lets see a couple that work.

First, and a classic, is to load a revolver with the occasional empty chamber. Either have a partner do so, where you can't see, or do so yourself and spin the cylinder. Coming up on an empty chamber unexpectedly can reveal a flinch dramatically to the shooter.

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In this video, played at slow motion, watching carefully at the muzzle will show some flinch as the empty chambers come under the hammer....



Again, instructive by itself, doubly educational with a video of yourself to watch. Honesty insists.... I was not trying to show a flinch that time... what you see is real.

Now, naturally this won't work with an autoloader. Not really.
Sure, for maybe one at a time, with someone else loading for you and handing you the weapon. It can help, but it's certainly slow and not much fun

More preferential, and more effective, is to purchase some action testing plastic dummy rounds for the weapon. These are inexpensive, and quite safe. They can also be known as 'snap caps', but those are more likely to be mechanical in nature with a spring loaded mechanism to reduce firing pin impact.
Action proving dummy rounds are solid plastic, cheap, and will function through a magazine just like a loaded factory round. They can be ordered for most all common pistol, and most rifle, calibers.

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Placing these intermittently in a loaded magazine will serve the same function as empty chambers in a revolver. At certain times the pistol will go 'click' instead of bang. If flinch is an issue, it will become apparent at that time. Again, video helps tremendously.

Using these dummy rounds in a magazine also allows another skill to be practiced at the same time.... the 'failure drill'.

What happens when your autoloader fails to fire as expected? All click, no bang... and that can be a sinking feeling. It need not be that big an issue if the failure drill is practiced. Also called a 'Tap and Rack', the magazine is given a smack to make sure it's seated and the offending round is racked out of the chamber, a new one being stripped in when the slid is released.

Here it is in action.... and no laughing please.... I'm trying to be helpful here...



Whatever method is chosen, flinch is certainly possible to overcome. If these methods don't help, a good shooting coach will know many more. No matter what... never give up!


Wednesday, August 12, 2009

CCW carry ammunition poll

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Please note the poll on the sidebar. It's the result of a conversation I had today, and carries no scientific value. You may choose more than one answer....

Thanks!

Carteach0


Monday, August 10, 2009

The Glock 30 in .45acp, a review and comparison

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Here in Carteach0 land, carry pistols have varied little over the years. In fact, they amount to three choices, depending on various factors. A Colt Combat Commander in .45acp, a Taurus model 85 snubby in .38 special, and a Smith + Wesson M+P 9c compact 9mm. 95% of the time the M+P won the draw, and was in my holster as I left the house.


The M+P has features I approve of in a carry pistol. Ease of operation tops the list, as it has no external safeties to deal with. The only controls that need be learned are the trigger, the magazine release, and the slide release. The M+P is also as reliable as any autoloader, and better than most. It gobbles up just about any ammunition, both factory and hand loads, and shoots them straight. It’s an accurate pistol… very accurate considering its size.


One builder glaringly missing from the CCW list is Glock, a pistol chosen by a great many people as their carry and duty weapon. A lot of folks swear by the Glock, speaking of unending dependability and ease of service. A few people swear at the Glock, calling it a plastic brick, and giving it the nickname ‘The Block’.


For most of my shooting life I fell squarely in the second group. The Glock series of pistols felt odd in my hand, and didn’t point instinctively. When I was young, my friends did a group buy on model 17’s, way back when they first came out. I opted out of the buy… and stuck with my old Colt. I still have the Colt, but their Glocks were sold or traded long ago. It wasn’t that I had anything against the Glock pistols…. they just felt wrong to my hand, and rather toy like.


Perhaps it was the years of experience with the S+W M+P, but the last time I looked at a cabinet full of Glocks, I didn’t turn away. Asking to handle a few of them, I found the new ‘SF’ models have a redesigned frame, and suddenly the Glock didn’t feel quite so ‘wrong’. Looking further, I encountered the Glock Model 30. It’s a compact CCW or backup pistol with a double stack magazine holding ten rounds of…. Oh My! The one true caliber! My old favorite, the beloved .45 acp.


Comparing the Mdl 30 to the M+P 9c on my belt, I found them to be akin in size. The Glock is slightly stockier, and slightly thicker, but only just barely. For man with big hands, as I have, the chunkier grip is welcome. The M+P 9c holds 13 rounds of 9x19mm, while the Glock 30 holds 11 rounds of .45acp (ten in the magazine and one in the pipe). Both come with decent sights, and both are available with night sights. Crimson Trace makes lasers for both as well.


The triggers are also comparable, with a slight nod to the M+P in crispness. Still, the new model Glock has a decent trigger, and is quite controllable in let off.


Both pistols have a minimum of external controls. The M+P has a take down lever on the left side, while the Glock uses the miniscule tabs on both sides of the frame. Other than that, they offer the same manual of arms. Immediately noted was the firmness of the magazine release on the Glock, as compared to the S+W. The M+P compact has had issues with magazine drops due to the design of the magazine catch. Clearly that is not an issue for the Glock, as it takes a firm gesture to release the magazine. It does not feel like it could happen accidentally.


Speaking of magazines… the M+P uses a steel magazine with a plastic base, while the Glock uses an all plastic magazine with a steel inner liner. The M+P magazine is easy to load, but the Glock…. is not. The tenth round going into the Glock magazine can be a real struggle. On the other hand, the Glock 30 feeds that ammunition as surely as night follows day, so the spring tension must work out just fine.


Shooting on the range, I found the M+P to be a pleasure as always. Easy to shoot well, accurate, and almost eager to put the bullet right where the shooter intends. The Glock, on the other hand, turned out to be a real surprise to this old skeptic. I had expected fair accuracy, and fair shootability considering it’s a small sized pistol firing a fairly large bullet. What I found instead was astounding accuracy, rivaling the Colt Commander. The Glock 30 also manages to absorb the recoil pulse in such a way as to make repeat shots relatively easy. All in all, a very pleasant surprise was dished up by the little Glock.


I managed to try two brands of factory ammunition in the Glock, and six different hand loads. It cycled all without a hitch. Even rather warm hand loads pushing Berries plated bullets turned out to be accurate, and that was a real surprise as well. The Glock uses polygonal rifling, and the company states categorically that only jacketed bullets are to be used. The Berries bullet is plated soft lead, and there was some doubt as whether they’d shoot in the Glock. Not only did they shoot well, but the bore looked pristine after fifty rounds of the snappy hand load.


In a blatant attempt to force a misfeed, I even shot a few dozen rounds loaded with the old Speer 200 grain hollow point. Dubbed ‘The Flying Ashtray’, these bullets had the largest

hollow point ever seen in a factory bullet. No longer available, Speer now sells the excellent line of ‘Gold Dot’ bullets instead.


The Glock digested the Speer ashtrays, and as if to sneer right back at me, spit the old style bullets into its tightest group yet. The bullet holes clumped together in a cluster just half the apparent width of the front sight from the fifty foot bench I was leaning on.


In roughly two hundred rounds of testing, the Glock 30 did not suffer one feeding or functional glitch. This was new from the box, as Glock delivers their pistols properly lubed and ready to go. I did nothing more than run a dry patch through the bore.


The Glock 30 is not without its detractors. Some owners of the SF (short frame) model have run into a problem with the slide rubbing on the trigger bar. I intentionally did not clean this example through several range sessions in order to let evidence accumulate. On stripping the pistol down, I did see a tiny shiny spot on the trigger bar where some have described it. It’s very slight indeed, and I doubt will be a problem so bad that a little polishing won’t cure it.


Cleaning is fairly easy with the Glock, and take down requires no tools. It does require brains, and a careful attention to detail. It's not that the procedure is complicated, but that it requires pulling the trigger to release the striker. Obviously, if this done with a round in the chamber bad things may happen. Not the least of which is embarrassment, and someone could easily be injured or killed. The answer? Just be smarter than a rock, and check to be sure the weapon is not loaded!


In holsters, a Dun Hume designed for the Glock is on order, but in the meantime I found it fits perfectly in the Galco JAK slide I used for both my M+P and my Commander. The pistol carries well, and does not drag down the belt at all. The chubby little spare magazine easily drops into a pocket, giving a total of twenty one rounds on hand. This compares well to the twenty five the M+P 9c offered, with a spare magazine. Given that it’s twenty one rounds of proven bad guy stopping .45acp…. that’s comforting indeed.


Regarding the subject of caliber and carry weapons, I refuse to enter the debate. My own thoughts are quite simple…. Any weapon is better than no weapon, any hit is better than any miss, and bigger bullets are always better. But… there is that old adage… “A 9mm might expand to .45, but a .45 will never shrink to 9mm”. I will say that the .45acp is one caliber that I don’t feel under-gunned with when carrying full metal jacket round nose slugs. Even these low tech bullets have a good stopping history in the .45acp.


To wrap the story up… the Glock 30 feels decent, shoots very straight, and if it lives up to the tradition of Glock dependability, it will join my list of regular carry pistols.



Monday, July 27, 2009

The Sig Sauer Mosquito: Plastic need not be evil

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Standing at the cabinet 'o smaller semiautomatic pistols in the gun shop, I had a number of choices arrayed before me. With a .22 target/plinking pistol in mind, the shop keeper laid on the counter the usual suspects from Ruger, Browning, and S+W. All had their good points and bad, but something whispered to me "Look again....". Another .22 still resided under the glass, and it was one I had missed at first glance. A Sig Sauer Mosquito in two tone, with silvered slide and black frame.


The Mosquito is a double action .22 rimfire semi-auto built by Sig to duplicate the feel of their P226 and P220 model pisto
ls. Brought in at 90% of full size for those models, the Mosquito has controls and functions that match it's big brothers. The only control that does not match is the safety. The Mosquito has a slide mounted thumb safety lever, while it's slightly larger brothers do not. There is no requirement to use the slide mounted safety, and it can be ignored if desired. The decocking lever safely lowers the hammer, just as it does on most other Sig's.

Looking at the specifications, it quickly becomes apparent the Mosquito may be 90% the size of a P226, but it's a 98% duplication of the size and shape of the P229 9mm compact double stack carry pistol.
This makes for an interesting possible combination; the P229 for defensive or concealed duty carry, with the Mosquito for low cost and plentiful practice.

The Mosquito seems to have been built with several ideas in mind. One is clearly the adherence to clunky old Sig Sauer solid dependability. Another, a target of meeting the training needs of those who own the bigger centerfire pistols but desire a matching .22 for practice. Lastly, the pistol appears to have been built with the motto "If it can be made of polymer, do so!"

The frame is plastic, as so many pistols are today, but Sig went far beyond that. The
sights, hammer, trigger, mag release, magazine, and even the barrel are plastic (the barrel has a steel liner). The pistol has a great deal in common with the plastic box it comes in.

The pistol is mounted with an external safety key, but it's fairly well hidden. Almost unnoticeable, behind the m
agazine well on the butt is a small hole with a flat blade in it. The pistol comes with a key to turn the blade. One direction activates the pistol, the other deactivates it. The pistol also comes with what appears to be a red plastic empty chamber flag that can be inserted into the chamber. Reading the manual discloses the flag also doubles as a clever 'dry fire' plug to protect the chamber mouth from the firing pin.

The sights appear to fixed, but are actually designed to be adjusted. The rear sight has a set screw, and loosening it allows the simple and rugged slotted sight to be adjusted left or right. The front blade is fixed, but unique in my experience the pistol comes with two additional extra sights. All three are different heights, and once the best ammunition is chosen the proper sight can be installed to match it's point of impact. The sights are 'three d
ot', with tiny but bright yellow inserts installed in them.

Field stripping for cleaning is amazingly easy. With the magazine removed and the pistol assured as empty, the take down lever is simply rotated 180 degrees. At that point the slide is pulled rearward and lifted up off the frame guides, and then allowed forward. This leaves the frame with barrel attached, the slide, and a recoil spring with
a guide. That is all the is required for normal cleaning.

It should be noted the pistol also comes with a spare recoil spring, and the simple field stripping is all that's required to change it. The extra spring is of a different rate, and can be used to tune the pistol to the ammunition chosen. To me, this demonstrates an understanding that .22 rimfire ammunition varies significantly, and erratically. Changing recoil springs on a blowback pistol is the simplest way to tune one, but getting different springs can be problematic. It's nice that Sig thought ahead on this.

Just for fun, there is also a heavy keyed security lock that comes with the Mosquito. It has a padded chain that's long enough to install down the barrel and back into the Master style padlock. What's slightly humorous about the lock is this: it may contain more steel than the pistol itself does.


The magazine is plastic, but fairly well built. It is also the source of the only problem encountered with the pistol during it's first range experience. The very first round ever chambered in the pistol misfed, with the bullet hitting the back of the barrel
instead of being guided into the chamber. There was only one more feed failure during the first one hundred rounds fired, and that was the final round in a magazine that launched itself from the ejection port, rather than chamber. It was found in the shooters shirt pocket, still unfired and unmarked.

A nice feature the Mosquito has, and one not assured on all .22 autos, is a magazine slide lock. The slide remains open on an empty magazine, just as it does with it's
larger siblings.

For some reason, Sig Sauer regards the magazine as an exceptionally valuable article.
The pistol comes with only one, and Sig wants $44 for an extra one. Midway USA has the same magazine in stock for $10 cheaper, but that is still a little pricey. Spares will be purchased, but not too many of them.

Fired for the first time on the range, the results are quite favorable. Where I have run into new Ruger MkIII's that required hundred of rounds of break in to begin functioning decently, the Mosquito began cranking out target after target with very few function issues. Only the two feed problems previously mentioned, and nothing else of exception to note. It may help that Sig Sauer includes with the pistol a $10 coupon on four boxes of CCI Mini-Mag rimfire ammunition. This helps people make the proper choice of breaking in the pistol with quality ammunition, rather than bulk pack cheaper offerings.
Sig includes a card with the pistol noting that it's been tested with CCI Mini-Mags and functions well with them. The same card also specifies a special lube point, and that the pistol needs to be regularly cleaned and lubricated. It always amazes me how many folks will take a new pistol out of the box, never clean it, and complain about function. These things are machines, and need care to operate correctly.

Accuracy wise, the Mosquito performed as expected. For a light weight short barreled .22 new out of the box, the pistol grouped decently. The first fifty foot group from the bench was under four inches, and when the trigger was mastered that shrunk to a little over two inches. It's not a 'target' pistol really, but much better suited to defensive practice, and the accuracy is more than adequate for the job.

More to the point, the Sig Mosquito immediately and naturally fell into it's niche of being a low cost training pistol. It fit the CCW belt holster perfectly, and the functionality of the pistol allowed for an excellent practice session. Over 100 rounds were fired in draw/double tap drills in the span of half an hour. With the 9x19mm, this would have meant an ammunition cost of about $40. With the Mosquito, it cost only about $6, and that's with premium rimfire ammunition.

I am becoming enamored with the idea of a rimfire pistol that exactly matches the size and function of my carry pistol. I can foresee a Sig Sauer P229 in my future as a CCW weapon. While my S+W M+P 9c has been a steady companion for several years, it has a few drawbacks the P229 would neatly solve. Add in the idea of low cost practice with the mosquito, and it becomes a winning combination.

Reading owner reviews on the 'Net, the Mosquito generally gets poor marks. Comments about feed failures with various ammunition, a trigger not up to match standards, and the fact that it's made of plastic and pot metal. All that taken into account, if the feed issues can be solved by using proper ammunition, then the other problems are more of expectation than manufacture. The mosquito is not a target pistol, and it's certainly not intended to last through several generations of shooters. It is made of cheaper materials, and this is reflected in the low cost. What it does have going for it is ergonomics. It's built as a low cost trainer for the Sig duty pistols, and for that function it seems to fit the bill. If Sig made one of quality steel and charged a few hundred dollars more, I'd rather have that, but they don't.

There will be a high quality .22 pistol in my future, of that I am sure. I have my eye on a K-22 as I write this..... but for now, this little Sig hits the mark as a training pistol that's cheap to buy, and cheap to feed. Stay tuned as a I wear it in, and attempt to wear it out. More reports are coming......






(Bit of an update....)

Looking at Sig's web site, I have discovered they do indeed have full size and high quality rimfire pistols built to exactly match their carry pistols. They also have rimfire conversion kits to fit most of their carry pistols. This is promising!

As for the Mosquito... I'm going to try and wear it out, while reporting on the progress as I go. We shall sort out the 'I heard' from the reality soon enough. Will it hold up to thousands of rounds on the range? Or.... will it prove to be a FTF waiting to happen? Stay tuned!

Wednesday, July 8, 2009

Woodchucks everywhere are quaking in fear...

.Or maybe that's 'Shaking in laughter'.

Yesterday I pulled a trusted old Savage FVSS from the safe and toted it down to the range for a bench session. It's one of the originals, without the Acutrigger, chambered in 22-250. I bought the rifle new, many years ago, and am rather proud to say it's never seen a factory loaded cartridge. I still have the first target ever fired with the rifle, using a load built on speculation. The group measures under .5", and reminds me still why I swore never to let this rifle slip through my hands.

The old Savage has a 1 in 12" twist rate, and like most 22-250's prefers lighter bullets. The load I most often fall back on is a 52 grain Sierra hollow point skipping along at just under 3700 FPS. No, it's not lighting any grass fires, but it's reliably accurate and easy on the barrel. More importantly, it's perfect for the 300-400 yard woodchuck shooting I use the rifle for.

I've found the rifle will also shoot 55 grain Nosler Ballistic tips in the same load to the same point of aim, with substantially the same trajectory. That's handy, especially now when loading supplies are just a little iffy at times.

The optics.... a Barska 6.5x20x target dot model that I'm more than pleased with. For an inexpensive scope it's got some great features, and is very bright and clear. When shooting this rifle/scope combination I can usually just leave my spotting scope packed up. The Barska target scope gives me a better defined and clearer picture than the 40x spotting scope.

There's something special about shooting tight groups at longer ranges. The big range was shut down yesterday in favor of the trap shooters, so I made do with little groups at 100 yards. Trying to make all the holes touch... balancing breath and heartbeat against wind and heat... that carries it's own challenges. Each shot leaving it's mark on the paper, joy and sorrow measured by tenths of an inch. Twitching the muzzle only a few thousandths will toss the shot an inch wide of the mark... so everything must come into perfect alignment. Body, mind, and rifle blur together as each bullet is launched towards the tiny target.



Saturday, July 4, 2009

Sight focus and prescription glasses

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As I get older, my eyesight grows worse. Perhaps too many hours at a computer screen, maybe it's the hundreds and hundreds of books I stick my nose in... maybe just genetics. In any case, I now need glasses to read where ten years ago I could stare down a cat with my steely focus.

The thing is.... a rifle's sights fall into the range where everything blurs for me, both front and rear. This presents a problem when it comes time to actually hit a target, rather than just frightening the ink off the bullseye. Not just me, but alm
ost everyone else who needs glasses to read.

The classic answer is
to switch over to scoped rifles. This eliminates the need to focus on three different planes in the same event, and allows precise aiming. Sadly, the rules of our high power match do not allow this, even for old farts like me. They do allow the use of a single prescription lens built into a peep sight, or a widget that sticks to the shooting glasses and presents a tiny precision hole to sight through. I don't especially like either solution, one altering my rifle, and the other just looking weird.

I know the real answer is to seek out the help of an optometrist who understands the needs of a rifleman. I've heard of one not far away, and who comes highly recommended. Seeing him is on my soon-to-do list. Till then, I wanted to try a little experiment; Shooting with my reading glasses on.

The time honored main method of precision shooting with open sights is to focus first on the rear sight, and then the front, bringing them in alignment. Next the focus shifts to the target, aligning the sights to it, and then the final focus is all front sight, letting the minds natural tendency to line up points take over. Aperture, or 'peep', sights work differently. In those the rear sight just remains a blurred circle, and the mind/eye will automatically try to place the front sight directly in the middle.

To someone who wears glasses to read, without them the rear sight is out of focus, and for some of us the front sight is as well. This makes aiming accurately very difficult. I noticed that both sights come easily into focus while I'm wearing my glasses, and I wondered how well I might shoot that way. Towards that end, an hour at the range with a very accurate open sighted .22 seemed in order.

Going through fifty rounds while making five shot groups, I discovered something interesting. At the fifty yard target line I was able to cut my group size almost in half while wearing reading glasses. Yes, the target was out of focus, but the front sight was sharp and clear.

Moving out to 100 yards, the results took a new twist and group size evened out considerably. I think this was caused more by my poor shooting ability, and the gusty breezes pushing the little .22 bullets around.

I'll just have to go back and repeat the test using one of my 8mm Mausers. Awe Shucks..... that means more time at the range shooting big guns. Rats.

Wednesday, June 24, 2009

Reloading tip: Cracked nickel cases

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(click on the photo to enlarge)

There is some question about nickel cases and premature cracking from multiple reloading. Does it happen? A resounding.... Yes. Is it a real problem? Maybe.

The .45acp cases pictured above are of several brands, and all were found to be cracked during examination while reloading. They are in a batch of roughly 500 well used cased of about the same vintage, and have all seen roughly the same loadings.

While the nickel cases in this batch are showing cracking about five times as often as the plain brass cases, it might be worth noting the wear on the cases. This brass has been reloaded in excess of twenty times..... and owes the shooter nothing. As can be seen, it's been through the process so many times the nickel plating is actually wearing off the cases.

I take away two points from this situation:
  • I will not hesitate to reload nickel cases when I have them, and have no fears of 'short' case life with nickel.
  • I will examine nickel cases a little closer during reloading, and reserve them for mild target loads where a missed crack may not be such an issue.
Why use nickel plated cases at all, if they have even this small flaw? There are several good reasons. Chief among them (for me anyway) is that I pick them up at the range and they are free. Secondly, they resist corrosion when used in a carry/hunting pistol, and won't turn your leather gun gear a slimy green with age. Thirdly, they feed nicely in an auto-loader since the nickel plating is rather slick. Lastly, they clean up in the polisher in minutes, rather than hours.

Nickel plated bottle neck rifle ammunition is another story, and can cause reloaders to have fits. The hard nickel coating resists sizing to a point, and the higher pressures involved promote cracking at a much higher rate. They can also be a pain to trim, and are hard on the tool heads.

That said, nickel plated rifle cases are a fair choice for hunting, as they feed very smoothly and won't corrode under even the nastiest conditions. They'll have a shorter reload life than brass cases, depending on reloading method and pressure of the loads, but five or six loadings out of a single rifle cases are still possible.

For nickel plate pistol brass... the photo above speaks to that. Yes, nickel cases will crack more often, but not enough to shy away from using them. All it takes is a little more close examination as they age.

Commenter Sigivald asks a good question, and one I should have thought of myself. Exactly why do nickel plated cases tend to crack more often?

I think it has to do with the nature of nickel and brass, and their being dissimilar metals. They expand and contract at different rates, and react to sizing in different ways. One metal is trying to expand .005", while the other is attempting to go .008". The stress and strain put in place can pull metal apart.

I have read that the internal stresses inherent in the nickel plating itself leaves it stressed at 50% of it's fracture point even while sitting at rest. Add in repeated firing expansions, pressure, resizing, expanding, and crimping.... and something is going to happen. Brass is much more forgiving.

After photographing some nickel plated cases showing flaws (example above) I noticed that some cases have cracks in only the nickel plating... and not the underlying brass. This would imply flaws in the plating process, and delamination of the metals. I have to think such a crack in the plating would quickly lead to a case cracked completely through the body.



Tuesday, June 16, 2009

A range review of Brown Bear 7.62x39mm HP ammunition

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I recently had some time to spend on the range, and a friends Winchester .22 that needed to be sighted in. I'd been told that a local gun shop had a fair supply of 7.62x39, so I took along my vintage Chinese Type 56 just for fun.

The shop did indeed have a few cases of Brown Bear 7.62x39 hollow point ammunition, but at ruinous prices. $9 a box! I bought only two boxes, in the interest of a range report for my readers. Okay.... and because I wanted to play with the SKS a little.

The Brown Bear ammo, so named after the brown lacquer that coats it's steel case, is a product of the Barnaul munitions plant in Russia. Created by Aleksander 1st in 1869, the plant has supplied Russia, and now the world, with ammunition ever since
. Moved under wartime pressure several times, the plant settled in Barnaul and a month later was supplying Soviet forces through the rest of the war. First begun in St. Petersburg by Czar Aleksander as a royal ammunition plant, it's now adopted the name of it's home city and become the Barnaul ammunition company.

This new crop of Brown Bear ammunition comes in three choices. Full metal jacket, soft point meant for hunting, and hollow point meant for target shooting. It's interesting to note that Barnaul specifies the hollow point round as suitable for light game as well.

The case is steel, and coated with brown lacquer. The lacquer is thought by some to foul chambers with a sticky residue. In my shooting with the Russian import ammunition I have not noticed
this happening. Then again, I have fired only a few hundred rounds of the ammunition in a few rifles, and none in pistols.

The bullet appears to be gilded mild steel, with a lead core and a largish hollow point. The hollow point does not serve duty as a means to expansion, as the jacket is tough and not scored to tear back in petals. On impact, the Brown Bear hollow point is far more likely to fold over and destabilize the bullet dramatically. In match bullets like the Sierra boat tail hollow point, the precision hollow point helps balance the bullet and stabilize it in flight. Somehow, I doubt the Brown Bear hollow point is precise enough to have the same effect, but I did not notice this HP ammunition to be any less accurate than the FMJ either.

In shooting, the Chinese type 56 SKS functioned perfectly with the Brown Bear
offering. Feeding was slick, even flawless, and it shot to point of aim with the military sights on the rifle.

Accuracy was acceptable, although not stellar. The 123 grain hollow point bullets all fell into an average of 2.5" at fifty yards, with no fliers that couldn't be explained away
as the shooters fault.

Ejection was slightly erratic, with some cases flying forward, some to the rear, and
some straight overhead. This may have been more a function of the rifle, although it has ejected more consistently with other brands of ammunition. I can tell you one thing... it doesn't help accuracy testing to have a hot steel casing bounce off your skull a few times.

All in all.... the Brown Bear ammunition is exactly what it appears to be. Decent quality ammunition for everyday shooting and target practice. Match ammunition it's not, but it was not intended as such. Function is excellent, it's reliable, and accuracy is acceptable. Considering it's pretty much the only 7.62x39mm game in town just now... it's not too bad.