My Cabela's Hawken Hunter Carbine shoots great with a 240 Hornady XTP sabot. It's rifled 1:24, VERY fast twist. It also shoots 385 grain Hornady Great Plains bullets (a Minie ball) quite well and that's what I prefer in it. I just think if I wanted to shoot a .44, I woulda bought one.
My CVA Wolf inline shoots the heavies quite well. I've not tried the sabots, but I'm sure with its 1:32 twist, it'd probably work well with 'em. I still prefer full bore projectiles.