I have a new T/C Hawken Flint in .50 cal.I want a .54 cal.,15/16" drop in barrel but can not seem to find one. I know Green Mt. used to offer them but they no longer offer anything in flint other than .50 cal.Do any of ya'll know where I can find one? Also,I read on here that someone used a .54 Lyman Trade Rifle barrel on a T/C with some "minor file work to the hook",but I don't understand how that could work?Correct me if I'm wrong but I've always heard the T/C had a larger hook than the Lyman and in order to fit a GM barrel to a Lyman Trade Rifle the hook needed to have some material removed.If this is true the Lyman barrel could never work properly on a T/C tang,it would be too loose? (Well I should never say never,maybe welding/soldering on the hook to enlarge it then file it back down but I'd rather not do all that if I can help it)Maybe I should just buy a Trade Rifle? Any help/suggestions are greatly appreciated!!!