Only ever used IMR4530 with a 105. Same twist, but my rifle is a Cooey M71. Barrel's not up to great accuracy. Still, with the glass bedding it's consistent. No deer hunting with an A-Max.
Alliant's site only lists a 100 with RL22. Max is 45.5. Five grains won't make much difference, but I'd go with RL-300mag's manual data.