I have been working up a load for my 25-06 for bullets ranging from 100 gr through 117 gr. I have a hard time finding H4350 info and have to ask here and other sites, look in old manuals, Hodgdon website etc…. The info is hard to find. IMR on the other hand is readily available everywhere. With H4350 being temperature insensitive and IMR not, why do people shoot IMR over Hodgdons and what is the difference between the two?