I guess I'm not following, you said if you wanted a larger group you would shoot 2-round groups 5 days in a row, presumeably to avoid a hot barrel? If it's not to avoid a hot barrel, then why would you not simply shoot one group and be done?
As far as needing a larger group size, that topic has been beat into multiple-dead-horse submission, here and elsewhere. Are you saying your 3-round group center is identical to your 10-round group center, or are you saying the variation is irrelevant given the size of the targets and the ranges at which you hunt?
It's perhaps not relevant for most of my personal hunting since I rarely shoot critters past pretty darn close range, but I'm not sure how one could say its not relevant for "big game hunting" writ large? A 3-round zero that happens to land near one side of the cone of fire can still very realistically be 1/2" off from true center...1/2" off=3" of built-in error at 600 yards. Even in a 1moa gun that much error puts a solid % of even your perfectly placed shots completely off a deer-vital-size target, even before you start accounting for other factors. Given the existence of hunting at long range, that magnitude of easily-correctible error seems relevant. Even eliminating the shots outside the core of this group, there are plenty of 3-round groups that could randomly fall together that would put your zero significantly off from the actual average center. If so, how do you suggest people make certain that their 3-round zero isnt shots # 4, 5 and 21, which appear to be a full inch from true group center? (Or 1, 2, 3. Or 7, 8, 9. Or 17, 18, 19. etc). Do you see it differently?
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