Need Single Shot Barrel

[DHB]

I need a pair of 32 caliber barrels (.312) for a Rolling Block #2 and a custom single shot. The barrels on both guns now are British and are way too big. Nimeric has .312 barrels that would be perfect but they are out of stock. Numeric has them for $82.50. A take off Marlin or Winchester would be fine if they are not shot out. Any ideas where I can find some barrels? Thanks Y'all.
DHB

[Bambeno]

Green mountian should have what you need.

[rhbrink]

What about a barrel liner?

[DHB]

Green Mountain has good barrels but they are expensive. The barrels are 24 inches long and at the muzzle they are .625 across. A barrel liner would work but they are .500 across. Drilling a .500 hole in a .625 barrel would be tough. I could cut the barrels off some to where they are .750 wide. A liner (Redman) would cost $95.00, a barrel from Numeric is $82.50. Thanks
DHB