Not a total novice to reloading but would like some advice. I am using IMR 4350 cause H 4350 is not available. My loads are shooting with Hornady 123 AMAX at 2720 FPS from a 20 inch barrel. I am going to be using a 143 ELDX for a hunting round and would like to know if there is a better powder for heavier bullets or more suited for a gas gun. I have been seeing RL16 gaining popularity. Any suggestions?