In my years of reloading I have noticed that the hottest loads tend not to be the most accurate. Growing up my pop had a 100 yd range in our back yard. 99% of my rifle shooting has been 100 yard target shooting. I think I once read an article in one of the gun rags back in the day that suggested 100 yards was not far enough to test rifle bullet accuracy. 300 yards was the suggested starting point. If I have a mid range load that is the most accurate at 100 yards will it be the most accurate at 300 yards? Will a hotter load be better for long range because the wind affects it less? I will be developing a load for my AR with a white oak 1/8 DMR BBL soon. I will think of this as a >200 yard gun. I will load 68-77gr bullets for it. (I might play with some 55gr V-max for coyotes. How do the match bullets perform on yotes??) I will be doing most of my first loads with Ramshot TAC powder, Hornady 75 gr match and Nosler 77gr Match bullets. Anyone have any guidance for me on this?
Accuracy VS Velocity 100 yds VS 300 yds???
- Thread starter squiggy
- Start date
Re: Accuracy VS Velocity 100 yds VS 300 yds???
Squiggy, things aren't all that clear cut. Actually, the difference in accuracy nodes isn't directly velocity related, it's more pressure related. What varing the charge does is vary the pressure and we try to "tune" our barrel viberations AND the bullet barrel timing so the bullet exits when the muzzle is most still.
Few, if any, 100-200 yard BR matches will have the shooters using the same load at both ranges. That's because accuracy down range is NOT a linerar progression, sometimes the bullets will settle down and the angle of dispersion will be the same or even better than it was at 100 yards. But, sometimes it won't so the 200 yard groups may be three times the 100 yard size. Bottom line, we just have to tweak our loads for optimum accuracy at the range we are interested in.
If I can't obtain the accuracy I want at full speeds, or very close to it, I'll swap powders until I get both speed and accuracy.
Squiggy, things aren't all that clear cut. Actually, the difference in accuracy nodes isn't directly velocity related, it's more pressure related. What varing the charge does is vary the pressure and we try to "tune" our barrel viberations AND the bullet barrel timing so the bullet exits when the muzzle is most still.
Few, if any, 100-200 yard BR matches will have the shooters using the same load at both ranges. That's because accuracy down range is NOT a linerar progression, sometimes the bullets will settle down and the angle of dispersion will be the same or even better than it was at 100 yards. But, sometimes it won't so the 200 yard groups may be three times the 100 yard size. Bottom line, we just have to tweak our loads for optimum accuracy at the range we are interested in.
If I can't obtain the accuracy I want at full speeds, or very close to it, I'll swap powders until I get both speed and accuracy.
Re: Accuracy VS Velocity 100 yds VS 300 yds???
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: squiggy</div><div class="ubbcode-body"> Anyone have any guidance for me on this?</div></div>
John Hollinger is one of the best AR builders and competitve service rifle shooters. See what he says here:
http://www.whiteoakprecision.com/info-reloading.htm
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: squiggy</div><div class="ubbcode-body"> Anyone have any guidance for me on this?</div></div>
John Hollinger is one of the best AR builders and competitve service rifle shooters. See what he says here:
http://www.whiteoakprecision.com/info-reloading.htm
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