The one thing I believe is very critical with 454 is BULLET JUMP please be aware of it. 454 can produce enough recoil that when you most need it the next round could move forward and your revolver just may lock up. Even if you only use factory ammo make sure you look at it before leaving the store ensuring a firm crimp. On the left is Hornady on the right is Winchester and I have never had a problem with either of these, they always have a firm crimp.