im curious if any one here has tried using 4F powder in magnum cartridges such as .357 mag, .44 mag, .460 mag, or .500 mag? I would think 4F powder would still yield lower pressures then the high end mag loads for these cartridges but it would get you closer then a case full of 3F. the fouling would also be lighter which is always a bonus. I don't currently own a gun in a magnum cartridge so I wont be able to try this myself any time soon but a .357 magnum SAA revolver is on my list.
so any one tried it?
-matt