What rifle do you have in .36 that shoots the .37 OOO buck balls? I looked at the cost of those buck balls and it seems like a no brainer for my next project.I am going the other way. My 36 shoots 000 buckshot too well to want to go to a bigger barrel and pay five or six times as much for the balls. I am looking for a barrel in the .340 range that can use the 000 buckshot also. Anybody have a source for a barrel midway between the 36 and the 31?