I’ll often just use 3ea. 5 shot groups and average them.
I shot a rifle a couple days ago that the first group was 1/2 MOA; the next group was 1 1/2 MOA. I didn’t bother to shoot a third group. The rifle was a 35 Whelen. I brought it back to the gun room and put a different scope on it. I have not taken it out again, yet.

Sure 5 ea 5 shot groups are better than 3 ea 5 shot groups but I feel that 3 groups is good enough for me.

A while back I took a Krag out and the first three shots at 54 yards were touching, the next two brought the group to much larger.

If you feel 5 groups is right for you go for it. If you think a 3 shot group is good go for it. Everyone has their standard.

I set up my spreadsheet to calculate MOA as I have several movable target stands I laser the distance and plug in the numbers. This is easy for me. If you have a way you like better good for you.

If the groups vary quite a bit I figure something is wrong.

Last edited by Bugger; 07/09/22.
I prefer classic.
Semper Fi
I used to run with the hare. Now I'm envious of the tortoise and I do my own stunts but rarely intentionally