I have used Accurate "Magnum Rifle" powder and can't find it anymore (discontinued). The container says it is compatable to IMR 4831, Hodgson 4831 and Accurate 3100. I have had great success with the "Magnum Rifle" powder and need to either find some old or go with something new. I mostly hunt whitetail, elk, and mulies and shoot from 50 to 500 yards. Thanks in advance.