Yup. They say the bullets can be pushed to 1,600 fps, so I figure I'll get minimum leading at 1,100 fps. I fired some old lead SWCs through my Redhawk .44 last week. I used a .44 Special powder load in .44 Magnum brass (850 fps). I finally figured out a way to get rid of that pound of HS6 I've had laying around.