I normally shoot 5 shot groups to see how the gun does and how I do. 10 shot groups further test out both, nothing more.
3 shot groups don't really mean much to me. Yes I've shot em and been proud of the gun but they don't always tell you what the gun will do, 5 is only slightly better.
But the industry standard is a 3 shot guarantee cause its pretty easy to find at least one load to put 3 together with nearly any gun but that does not make it an MOA or less gun. At least to me.
