any one ty alliants AR powder?? i have been using reloader 15 for 308 and 223, i was told today that the AR-COMP powder is the better and its temp resilient?? any experience?
If I had some QL data files for the powder, I'd let you know. From looking at the Alliant data, it's mostly for 69gr weight class bullets. I mostly shoot heavies, and 2000 MR is similar to N-550 and give about 50 f/s faster at the same pressure levels.