I don't recall how many times I've accomplished this and consider it a meaningless exercise except that it can show how difficult 1/2 moa can be. Especially with a hunting-capable rifle. With BR rifles a 1/2 inch average is a source of embarassment.
We used to shoot Hunter class for group on occasion and it was very difficult to stay under .5 with a 308 and a six power scope. The best aggregate I ever fired with a 308 (not a hunter rifle) was a .26something and still there was one group over 1/2 (this was made up for by the two which were under .2). Leeper
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