excepting that testing at 100 yards means NOTHING at long range.... it may or may not be relative at all.
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This!
I rarely shoot 100 yards other than to confirm my zero. During load development, after shooting two ladders to establish and refine nodes, all groups are shot at 500 yards. The chamberings I hunt with run out of steam for reliable bullet expansion between 500-600 yards so that's the limit for shooting at large critters for me. The rifle needs to hold better than MOA at those ranges and .75 to .5 is preferred. All groups are 4 shot in my hunting rifles, because that's what fits in the magazine. I prefer 5 shot groups, but with a sporter weight barrel especially in a magnum chambering, things can start walking around a bit after too many.
