Uncle matt, Have you tried A-dapting a Super Soaker to fit the underside of the barrel to help cool that pesky weld on your boss? Perhaps something similarto the way40mm grenade launchers can be mounted under barrel on a M16? Maybe you could freeze the pellets before firing them?Just a couplethoughts.. Did you have to tweak and adjust the boss a lot before you were shooting sub MOA groups of pellets at 60, 80 and 150 yards?