RE: rebore a pitted .54 Renegade to 20ga
If I could just buy a barrel I would.GM discontinued thier .62/20ga smoothbore and I'm not aware of a 12 ga barrel drop in for the Renegade.I saw another fellow with the GM barrel that sent it to Lowell Tennyson in Blue Grass IA to be jug choked.And he was wacking turkeys at 40 yards with full choke patterns for around $75 The closest bore for the .54 would be a 28ga at .55" diabut I'd rather a 20ga.20ga bore is .617 and a5/8 drill is .6250 and a 15.5mm bit is .6102 then add a jug choke..........................hate to strip it and toss the barrel but chances are you'd never get the plug out.Harold *another option would be if you want a rifle is remove the old riflingand insert a liner