If I'm testing groups on a new rifle, my preference is 10 shot groups.
After that, to reassure myself of pellet choice, I put a bunch of marks on paper with a marker pen and take 1 shot at each.
On a large proportion of YouTube rifle reviews the tester uses a three-shot group to demonstrate accuracy. Does anyone else think this is knackers? In Walter's book there was an interesting piece on calculating the true centre of a group and it needed 25 shots to give statistical significance.
While I think that 25 would be tedious to watch and also quite hard to do in a string for the shooter, I think that the minimum number of shots for assessing accuracy ought to be 10 or 12, even if two different aiming marks are used.
What d'yall think?
If I'm testing groups on a new rifle, my preference is 10 shot groups.
After that, to reassure myself of pellet choice, I put a bunch of marks on paper with a marker pen and take 1 shot at each.
All of the above.
5 shot groups when deciding on pellet choice ..... three not a real indicator due to operator error and the occasional flier and ten a waste when five should provide enough info
A group should be ten. By law.
Three shot groups are plenty.
If you shoot more than three shots and any open up the group ... then just ignore the ones that open up the group and measure the best three ... and that's how accurate you can shoot a group.
3 shots with centrefire, any more than that gets expensive.
5 with rimfire and 10 with air.
“An airgun or two”………
Depends on why I am shooting the group. Pellet testing will be groups of 10. Checking zero after maintenance may well be 3 shots if on target.
Pete
I travel alone
Once zeroed I tend to use the 3 shot method to check and then dots on paper one pellet at each.
You can spend thousands and still miss a barn door or spend just enough and enjoy yourself. If you haven't got the talent to start with a million pound won't fix it. Whippet, Russell, a few bang sticks and a flat cap. http://www.smart-tech1st.co.uk
I'll shoot 5s to get a rough idea, then 10s for proper accuracy testing...
Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
I shot five shot groups. I start being taking a shot at a sheet of card, than use that to zero, After four or five more shots I than start agin, that way I can keep the groups from opening too much!!