I believe I have just barely been good enough for a Lyman's Deerstalker this Xmas. I've been pushing for a Deerstalker.

I see that Lyman's sells spare barrels, and both Deerstalker and Trade Rifle barrels will work on the stock. But my idea is to have a short, light, and handy rifle as well as one with a fast twist that I can put a PC type scope on for shots across fields and whatnot in .50 cal.

I've also considered how cool it would be to get a .54 cal barrel and bore it out smooth for a shotgun to use on small game. Lyman's states their .54 cal has .558" grooves in a 15/16" barrel. Would 20 ga (.615") be pushing it?