i have a T/C hawkins flint with 1/48" barrel. i' m thinking of shooting some conicals, and thought of 245 gr buffalo conicals. my question is how good of a fit are they going to be in my .50 cal barrel. i' m tring to find out the measerment of the top of lands and the bottom of the grooves. i found some bullets at gander mountian that had a .512 dia. marked on the box for .50 cal. are the top of the lands .500 dia or the bottom of the grooves? and how well the ease of loading the .512 dia, in my barrel? thanks..............bob