Re: What Alliant powder is close to H4895
RL15 works fine in the M1A. Its burn rate is similar to IMR 4064, which had been a go to powder for the heavier bullets (ie 180-190s) in the M1 and M1A for many decades when those guns were used in HP shooting. My M1A NM shoots the 168/175s better with RL15 than with 4895. Just can't hot rod the loads for the M1/M1A. They shoot best in the middle of the road load and it won't beat up the oprod and bedding. BTW RL15, and possibly, IMR 4064 hve been the powder in the recent M118LR.