Anyone have a good recipe for loading a Barnes 45grn TSX bullet in .223rem? I am using Win.748 powder. The rifle I am feeding is a N.E.F single shot, heavy barrel varmint. I would like to shoot an antelope with it this fall, and this seemed like a good way to do it. I have an older Barnes manual (no TSX) that shows 28 grns max for regular X. What do you think?