Shooters can’t more with levels on their rifle than without.
They check it wrong and then subconsciously shift off target, I have documented this in class after class, as well most can’t when running the bolt, they add it in and miss it, over and over, even with levels mounted because they don’t understand it.
Almost all newer shooters add a level, it’s a religion, thanks to companies like vortex you see levels on the scopes all the time. Just look above, RPR budget, probably no real training but all the toys.
You can easily see if you are adding to the wind call, especially when no two use the same and running classes with 20 guys on the line, all with the same rifle, optics and Ammo, you see the results and who does what to get those results. In a government class of 20 guys all shooting a 308 the variation is 1.5 Mils on the low end and 3.5 Mils on the high. Human factor if you train that the rest follows.
I teach, I record, I analyze and I have experience beyond the fool taking computer data for gospel. I find it interesting I just stated the SD numbers are wrong, and you’re quoting them. Gunsite said 8.4 inches at 1k, you say 11.4” and your read the Boatright paper on here, observed was 6”. It’s wrong, human factor is the biggest variation we have. Why do some people hit more than others, the human factor, add in all the widgets you want the better shooter wins. SD is 1.25% elevation give or a take the conditions because the wind direction matters too, as does it’s speed. There is more to it than twist rate. Spin does not bleed off like velocity and with modern powders and bullets we maintain our velocity farther than ever, so SD is smaller than the 1950 formula being used to provide your data. You talk of old school,thinking and you’re using 50,s and 60,s formulas. Lame.
Canting can be fixed by a bipod change alone, go measure how square your Harris is, look at the legs, the springs, it’s part of it. I was shooting Gunsite with Marc who I teach the Alaska classes with who was my Platoon SGT in the USMC and Honor grad of the instructor course. No level, but once on target and settled in, he instructed me to lock down his bipod. ELR as taught at Gunsite is a team endeavor like sniping. The spotter tends to the shooter, the shooters job is to run the gun. Part of it, lock the rifle straight. It’s the movement between the shots that fucks guys.
Have a group a 100 that is strung, 2 in one hole, then 2 in another hole and maybe one thrown some where close, canting. Guys line up Shot 1 and fire, run the bolt, ignore the level, fire canted, they run the bolt, fire even more canted, run the bolt, see the can’t, check level, fire Shot 4, run the bolt can’t slightly and fire Five.
The uneducated shooter misses the mark because they don’t understand the process. Of course most people are doing it wrong, 99% have no formal training. Muddling through and just repeating the same mistakes over and over, on top of one of the longest running games of Telephone, stacking on bad info over and over. Regurgitating the same old and tired talking points as a replacement for experience.