Quote Originally Posted by Shed tuner View Post
lol - group sizes are measured centre-to-centre
That's right, but the larger the variables the larger the group. We are dealing with soft lead ammo!!
Just trying to explain why a .22 prints larger groups.
Then take the R&D that has gone into .177 over the other calibres, and that is why the best .177 pellets print tighter groups than larger calibres.