Now Steve I know I must be mistaken, but I sure do sense some tone in your reply.
I think you are wrong about that 4 inch standard. I am pretty certian it was 2 1/2 inch as the standard.
Yes that group was shot from the bench, from a rifle I bought on this forum from a member named "ejohn". It did shoot this group at 200 yards with the Korean ball. It caused quite a uproar amongst my shooting buddies
at the Laguna Seca Range in Salinas California.
Laguna Seca Shooting Sports Association
1025 Monterey-Salinas Hwy
Salinas, CA 93908
(831) 757-6317
The range master that loaned me the ruler to measure the group center is named Jeromey. Give him a call. He saw the shot string and the group.
I stand buy my comments that there are other guns more suited to reloading.
So do many other folks. However, feel free to do so. At the very least I would put each round you load for a gas gun into a Case gage. I would make sure you use the special Military type "hard" primers. I also would suggest really limiting the number of times you reload your brass to just 2. I would also make sure you use powder, and bullet weights designed to give the correct pressure curve so you don't bend your op rod.
Or you could just by some good surplus for less money and go shoot.
Noted experts speaks to reloading for Gas guns
Whew........ I feel like I got called out. Steve a few hundred years ago I think we would be dueling about now.