What's the twist on Taylor's .62 rifle?
That one is a 66", I think. Rice barrel. I know darn well it will shoot even better, with a bit more powder, but that Hawken hooked butt plate,
even at 11 1/2 pounds, or whatever that rifle is, is uncomfortable. With the very heavy loads I used in my .58 Hawken, it was not fun to shoot
on paper from the bench. Offhand, was fine.
IIRC, Val Forget used 175gr. 3F GO in his .58 "Hawkens" he took to Africa. That powder charge was with a 610gr. Minnie bullet.
My own Hawken, a LOT heavier made than his little rifle, was downright obnoxious with 160gr. 2F GOEX and a 675gr. bullet, at 1,325fps.