Quote:
Originally Posted by JJMarsh
Interesting point! I've definitely noticed that the more rounds I put into a group, the less impressive it tends to look — even if the overall consistency is better. I guess there's a psychological side to wanting that perfect cloverleaf from just three shots.
I’ve tried using the CEP (circular error probable) method and the mean radius in some of my tracking, especially when comparing different loads or optics. They feel a bit more honest than just measuring extreme spread, especially when you’re shooting 10+ round groups.
Curious what methods others here use too. Do you guys prefer measuring just raw group size, or are you logging stats over multiple sessions?
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Some barrel markers guarrantee sub-moa group. Guess how they measure the group? They fire a lot of 3-shot groups. If any of the groups is sub-moa extreme spread, they are done.
A lot of shooters do more or less the same. They show you the best 3-shot or 5-shot groups with extreme spread group size.
There was a YouTube challenge. The host put up $1k award for anyone who could put 10 shots into a 1moa target at any distance. A lot of seasoned shooters attempted to pocket the easy money, but all failed miserably.
I always fire no less than 10 shots to "qualify" a load. Never care extreme spread. Mean radius, adjusted by # of shots, to calculate 50% group size (CEP) and 90% group size. That makes me realize that I am at 1moa to 1.5moa level. Very occasionally I can go below 1moa 90% group size. Good enough for hitting torso sized steel target beyond 500yd with respectable hit rate.
-TL
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June 13, 2025, 10:54 AM
