For my AR15 service rifle I load 25.0gr Varget or 24.0gr RE15 under 75gr Hornady HPBT Moly in a LC case with Wolf SRM primers, loaded to mag length. These are upper end, your mileage may vary, but both are pretty well accepted loads for the service rifle. Start a couple grains lower and work up. Lots of published data out there.
|