Tuesday, June 9, 2009

New on the sidebar: Images from the military rifle matches


On the side bar, an image that links to a slide show. It's comprised of photos from the SLCFSA military rifle matches, and will grow on occasion as more images are uploaded to the show.

I shot in the D-day match with the 1938 Turk this past weekend and scored a respectable 346/500. My son whooped my butt, using one of my rifles, and beat me by 20 points. Brat. The boy can shoot.... thats for sure.

During a lull, I was talking with another shooter about annealing cases. It turned out he is (a) a materials engineer, (b) a long range precision shooter, and (c) a very serious person with his hobby. He's done studies on annealing brass, including sectioning cases, etching, and crystalline structure analysis. He told me of a simple way to anneal my case necks that works, and I'll be trying it soon. Naturally I'll write it up for all to share. Look for it in the future.

9 comments:

Anonymous said...

OF COURSE your son beat you. He's younger, with much better eyesight.

B Woodman

fuzzys dad said...

Sounds like you taught him well.

Little Joe said...

Just a note to say how much I thoroughly enjoy your blog. I really appreciate how you stick to the facts and do not lower yourself to the level of so many "gun bloggers" that I have read.

You always have good information and excellent demonstrations / range reports etc.

What I like the most is that you are always a gentleman that refrains from the insults, name calling and childish commentary about hippies, bacon etc. and other such derogatory snark I read on so many other gun blogs.

Thank you for an enjoyable and civilized blog to read. There are a few others out there that I consider good gun blogs but for the most part I see way too little actual gun blogging and way too much put down and snark when commenters don't 100% agree with the blogger.

Keep up the good work CarTeach0. It is a welcome reprieve from the rat race for me and I find your discussion on shooting and reloading very enlightening more often than not. I've picked up a few good pointers from you.

Have a good evening,

Joe

TJP said...

"He told me of a simple way to anneal my case necks that works, and I'll be trying it soon."

Looking forward to it. Just about all the methods I've seen are either terribly imprecise, or so expensive (fuel wise) and labor intensive that buying new brass is more practical.

The only one that works for me is to dip an oiled case neck in my lead melt (since I'm already running the pot) and then quench it. The temp of the melt is read by a thermometer, several can be done at once, the heat application is even, and the exposure is short.

Carteach0 said...

TJP,

I wouldn't be willing to dip an oil coated case into my lead pot. Just the slim chance of 'The Tinsel of Doom' would stop me.

The gentleman I spoke with made a good case for his simple method, and backed it up by explaining the testing he had done. His professional life is dealing with materials in the electronics industry, and one of his hobbies is extreme precision shooting. I gather he not only seats in a micrometer seating die, but has built in a strain gauge to measure neck tension!

He related a series of testing involving annealing, cutting cases apart, acid etching, microscopic examination, hardness testing, and a few other things I just did not understand.

His method is as simple as it gets, and he related it in detail after I expressed fears of imprecise annealing and unsafe cases. It's nothing more complicated than the old propane torch trick, while watching for color, followed by a water quench to stop the process.

It will have to be done at night (for the darkness) and I will have to make one small tool adapter, so it will wait till this weekend perhaps.

Johnnyreb™ said...

Looking forward to it!

If you can work it in, how about explaining why you would harden the cases. It would seem that they would be more prone to splitting since they no longer retain as much 'softness' to be formed by firing.

Carteach0 said...

Johnnyreb, Good thought. When I write it up, I'd best explain what annealing is and why to do it.

Arthur said...

I thought this was a pretty good primer on case annealing - The Art and Science of Annealing

Carteach0 said...

Arthur, I read that piece and I agree. An excellent article and highly informative. The facts presented matched what I found elsewhere, but it was all wrapped up in one complete piece for one stop reading.

That said.... there is no way I am going to lay out the $350 the article's author charges for one of his annealing rigs.

I'll have my post up shortly on how I chose to do mine.