RE: 44mag / 454 casull
recoiljunky just wanted to let you know that when you load the hornady xtp' s you should load the xtp mags as they were intended for the use of the 454 in mind. the standard ones regular xtp are or can' t stand up to that kind of speed. THat is if you are going over the 1600 fps. I don' t know but that might be why you are having copper fouling.
Brian