Re: Question for all of you guys
I apologize for my flippant response.
Retracing, I was simply giving shorthand for the vaguaries of shooting reality. There are lots of issues involved, more than are defined here, maybe more than can be defined here.
Accuracy of the degree you describe is actually somewhat beyond the 'practical' accuracy most of us deal with here. It's somewhat more into the realm of the 'ultimate' accuracy that BR shooters deal with. The more accuracy one achieves, the more factors there are that can upset the cart. The problems you describe are very similar to what one hears at a BR meet.
Here's a few thoughts about what can change when 'nothing' is changing.
Parallax. If it's not right, cheekweld variances, even small ones, can create dispersion.
Case neck hardness. Reloading hardens necks, and harder necks result in altered neck tension. Altered neck tension affects dispersion; so even the same brass is not really the same brass the next time around.
But mostly, the environment is also changing in ways that can be difficult to detect. If the kind of accuracy you describe is habitual, you're really quite privileged. If it isn't, then maybe the experience you describe (the good one) is the anomoly, and might not be as repeatable as one may suspect.
Muzzle flip[ (I'm guessing this is what youre describing when you refer to the change in recoil) can be altered by means of stock ergonomics. The less drop there is at the stock's heel, the less flip. Comparing a classic sidelock percussion rifle's stock lines with the more straight line configuration of the AR stock is a relevent illustration. Stocks that resemble the AR have less flip than the sidelock does.
Greg
