When I was using my .45 flinter in the late 70s and early 80s I started with 65grs FFF Goex under a 128 gr .440 ball...It killed deer...

Yeoman, with all due respect, if you didn't recover the bullet, you don't really know if it expanded or not...I'm sure it looked like it didn't expand but at the slower speeds of muzzleloading bullet you really can't tell...Many think the XTPs expand too easily...