the barrels used on Swing-Lock firearms are ordered through well known custom barrel manufacturers and are of premium grade highest quality chrome moly, stainless or carbon steel

http://www.swinglock.net/materials_workmanship.htm

I make room for centerfire, traditional muzzle-loader, and modern muzzle-loader firearms. While I agree with Daryl that a large roundball is a wonderful killer of game, other guns are also well suited to hunting and interesting. I have one of the Swing-Lock rifles that Tom Post built for me, and while it's anything but traditional, it kills like lightning. I enjoy it as much as I do the 16-bore stalking rifle Steve Zihn built for me. I guess I just like guns and hunting.