Relining to 50-70

[Baron von Trollwhack]

I have a New England Firearms 20 gauge full choke single shot shotgun. Fairly recent production in excellent condition.
Would it be possible to reline this gun to 50-70 Government for only black powder use. I see that Track has liners that may be suitable dimensionally. Your advice is appreciated. BvT

[Jedman]

Yes that can be done. If you have a lathe you can convert H&R Huntsman muzzleloader barrels with the 7/8x20 thread breech plug to a 50-70 or you can turn a suitable 50cal. muzzleloader barrel to fit your shotgun barrel as a liner and epoxy it in . I have built several of both.

Jedman

[johnson1942]

do not go with the 1/20 twist barrel liner. way way too fast a twist for a 50 cal cartridge. you need no faster than a 1/28 or even a 1/32 would be better for that gun.