RE: what gun you shoot?
I own one of the first Mossberg 835 pump shotguns. I've used the Xtra full choke tube that came with the gun. I shoot #4 Winchesters, not the high velocitys. I'm trying the Madd Max tube this year, the .690 constriction for 4&5's. Haven't patterned it yet, but we will soon....
Gobble Gobble