Do AR15's run at the same pressures as bolt rifles. I have a DPMS LR308 I am working on a load for, and using Hodgdon info for their 308 load. Loaded Varget from 42-46gr in1/2 grain increments, with FedGM210 and Sierra 168gr HPBT. Did not see any flattened primers or cratering, and only 0.002 expansion on base of brass. I guess my question is for an AR15 can you use same load data as for a bolt rifle ?