I have a Greyhawk, which is the same thing only stainless and synthetic. It's a .50 and has always been a little fussy about the bullets it likes. A few years back I tried the Hornady FPBs and bingo!
I also have the tang peep, which is like gold these days, and made a square blade front sight. Last fall I fitted a Weaver base for a Mauser using the existing sight holes so I can try a red dot, but haven't tried it yet.
Keep you eyes open for one of the shotgun barrels.
