Re: internal ballistics at elevation change
I suspect thst something other than elevation might be going on with your rifle or load. You should generally not see a change in accuracy with the elevation change you describe, at least at moderate ranges. I load and practice at 350ft elevation where I live, and hunt at 2000-5000ft. I have been doing this for many years. Given my load is accurate, and my ES is under 12FPS, I have had no issues when hunting at higher elevations with a few different rifles/calibers. Since temperatures are usually also a variable, it's important to use a temperature stable powder. H1000 does have pretty good temperature stability. After setting up my zero and ballistic program at home, 350ft elevation, when I arrive at my hunting location, the first thing I will do is check my zero at 100 or 200 yards. It has usually been unchanged. If I enter the altitude, temperature, and humidity for the new location into my ballistic calculator, I'm good to go. The majority of my shooting is under 1000 yards. It is important to be sure your bullet's BC used in the program is accurate.IMO.
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