thanks guys, appreciate the quick responses.
i'm just trying to figure out if i want to get a rifled barrel for my mossberg 930, or if i can just get a rifled choke tube for it to shoot slugs with. i suppose a rifled barrel is optimal but money is an issue as well. can you mess up a rifled barrel if you shoot steel shot through it ? and do rifled barrels have choke tubes?
another question.... so say i want to shoot waterfowl, would i want to get an after market choke(s) that is better suited for shooting steel shot, or are the factory chokes fine with steel shot?
not sure why i would do this, but if you shoot with no choke in, will lead shot screw up the threading?