A while back, I posted here regarding choosing a new optic for a 30-06 Mauser. There were many good suggestions, and interesting points made. In the end, I stayed with my first thought, and bought the Nikon I'd originally looked at (Nikon 3x9x40 with a BDC reticule) This scope met my criteria. First, sadly, price is part of the equation. The Nikon costs less than $200..... which is surprising considering the second criteria.... quality. This is the third scope of such lineage I've owned, and like the others this one displays excellent value for the price. The magnification is in keeping with the rifles caliber and purpose. It's a 30-06 bolty, and a hunting rifle. Given it's exceptional accuracy (1" 100 yard groups are no problem), the rifle should be effective on big game out to 500 yards. Again, considering it's accuracy, it might actually be an effective varmint rifle out 250-300 yards or so. 3x is fine for close up larger targets, and the 9x magnification is suitable for targets farther out. Nikon's BDC (Bullet Drop Compensating) reticule doesn't really compensate for anything, but it does provide a series of aiming points below the cross-hairs that roughly correlate to bullet drop at various ranges. The idea is the shooter actually checks the real bullet drop compared to the corresponding circular aiming point, establishing reference points for future engagements. The circle aiming points have an inside diameter that almost exactly encloses 1" at 100 yards. I find this tremendously useful for judging range on known objects.
Looking at scope adjustment, the Nikon Prostaff uses a form of turret that I greatly appreciate. First.... it has scope caps that don't allow stray touches to jerk the adjustment around, just as most scopes do. But.... once the caps are removed, we find something more commonly seen on dedicated target scopes. The adjustment knobs operate by finger, without tools. Once the scope is zero'ed dead on at 100 yards, the adjustment knob is lifted and turned back to it's '0' setting, and settled back into place. After that, the scope vertical and horizontal settings can be changed with confidence, and then returned back to zero every time. Graduations in both directions, along with a solid detent, make this a sure operation. As far as accuracy of adjustment, I found the '1 click = 1/4" at 100 yards' to be dead on. Sighting in was a matter of firing one shot, doing the simple math, and moving the resulting number of clicks. The next shot landed exactly as predicted.... and the next three hammered out a line of bullet holes within less than an inch of each other. It's a heck of a scope for the price. Hands down. It meets my needs just fine, and it's features are useful beyond measure. Two thumbs up!