this is going to be a topic of interest since Imr and Hogdon has merged together I have only used imr for everything I shoot and only used a couple of hogdon products like h-110 my favorite in 375 mag 44 mag and 45 colt , is hogdon compatiable to Imr or not I always start low by 15% and work uo 1 grain at a time anyway but just wondering. kjg