Re: What keeps a round from holding MOA
Number of reasons.
bag technique is more critical at long ranges
bullet variance in base to ogive
load variations that give large ES
poor quality scopes
Pick a reason and most of the time, combination of several.
Popular misconception, groups can tighten up at longer distance. Yes, and it is called a "freak accident", but it will not happen normally or more important repeatedly. if it will not shoot good at 100, no way it will shoot good at 500 or 1000.