I am in need of a new barrel for my T/C Hawken that was given to me by my grandfather,,,, from the information i have received barrels are limited and the factory breech has a 11/16x20 thread dia. I know that TOW has a breech and tang set with a 5/8x18 thread will this mate with my T/C stock and then i need to find a barrel that will fit the breech?