We’ve been shooting 10 round groups for a while at work. I consider them a necessity when zeroing irons or optics and think they’re a great tool for evaluating the potential of a load or barrel.
But I’ve been watching and listening to some stuff from Ridgeline Outfitters. They have a training company somewhere out east and their cadre are some of the best rifle shooters in the country.
When they were evaluating a rifle on YT a few things jumped out at me.
1-They used 5, 5 shot groups.
2-They used mean radius rather than overall group size.
3-0.68 mean radius is the standard required of the M110 rifle.
Which made me wonder two things…
1-Once you’ve got a good zero and have a baseline for accuracy, why wouldn’t 5 shot groups be sufficient for tracking accuracy and checking zero?
2-More specifically for the folks here who shoot a lot of groups, why don’t you use mean radius rather than overall group size?
