I am new to reloading for Precision Rifle. (Not to reloading.) I have a MPA built Curtis Axiom based rifle with the MPA Barrel chambered for 140 ELD, to shoot PRS style matches. I have been buying components since August and have bullets bought between 136 and 140 to load. I have some H4350 and more 6.5 Stabal for powder and enough primers for now. Since powder is the hardest thing next to primers I want to widen my search. I am looking at Accurate 4350 and R 16 as other powders to try. I have read about a bazillion articles here and at other sites to come down to these two and I have seen more of these available than others mentioned. So my question for you, are either of these 2 powders something I should attempt to load with and if not what based on the above criteria. Thanks.