50 caliber, 1:70 twist, 36" long, 1" across the flats, 1137 steel, single point cut rifled, air gauged, stress relieved, octagon black powder muzzle loader barrel blank with breech threading of 3/4 x 16 RH. Does not include breech plug.
Posted by Richard on 21st Oct 2015
The two fifty cal muzzle loading barrels I have
received from green mountain barrel co are identical in finish and machining. The breech plugs recess is the same and right on in size.
Green mtn. produces a good product. I will go to them when I need a barrel.