My T/C Hawken; 1 in 48 twist, 28" brl, .005 depth rifling, likes 80 grains of 2fg Goex pushing a .530 PRB...
My Hawken; 1 in 72 twist, 36" brl, .010 depth rifling, likes 90 grains of 2fg Goex pushing a .535 PRB...
I do not use a target load with these two rifles as they are strictly for hunting.
I did work up a 50 yard bench load one time for the T/C Hawken, and it was; 63 grains 2fg Goex, using a .530 PRB. I got 3/4" to 1 1/8" groups over six test targets of three shot groups. I didn't feel the load was quite what I had in mind for a hunting load, so I made the 80 grains work.
Every muzzleloader is different. You need to test, test, and test some more to come up with what you require. That's one of the fun, and frustrating, yet rewarding things about muzzleloading. :thumbsup: