There is a big shortage of good Black powder in my area. Even with the hazmat fees i paid out $38 a pound for T7 in both 2f n 3f. I use it in my inline T/C Blk. Dia. 50 cal, also in my T/C 45 Hawken n my Renegade 54 cal. I duplex with my only black powder Goex 3f in my Traditions Hawken 50 flintlock n my Pedersoli 45 cal flintlock. I never have a crud ring, i never shoot over 85 gr in my ML's. 2 things i know about it is it fires when i use it n usually 2 holes in tick toters in & out