Hold on a minute.
If you don’t change anything, and the cleanliness level stays the same, until the recoil spring fatigues, you can have reproducible distance traveled.
Just for that gun.
If his weight or limberness doesn’t change, and he stands the same way each time like leaning up against the tree or something, he very well could feel the difference in recoil between different cartridges.
But I do think that’s the long way around the barn.
I do not view his idea as useful.
He could do the same thing with a standing breech, standing up against the tree. He would definitely feel the difference.
Last edited by ClapperZapper; 04/28/23 08:31 AM.