Hornady has a couple of loads. Just make sure you get the right bullet. You want the XTP Mags. The regular XTP’s will not hold up under the pressure and FPS of the 454 Casull. This is direct from Hornady, I got a mess of the XTP’s and found that cannelure wasn’t right. Sent off an email and got the response about the XTP Mags. I’ve got some 280gr WFNGC’s from Beartooth that somewhere around here I have data for. Just can’t put my hands on it.