I am working up some subsonic 454 Casull loads to use this with my lever action rifle. My first loads were a bit slow, Titegroup seems to be a good powder. I will probably end up with around 10.5 grains with the 325 grain Swift bullets. I Killed a feral hog earlier this year with subsonic 350 Legend loads and the 454 will have more energy than those.

If I could get my 45/70 barrel threaded I could load some subsonic loads with the Hornady 410 grain sub x bullets.