The Firing Line Forums - View Single Post - imr 4198 and 65 gr Sierra Boatail (5.56 load)

603Country · July 12, 2013, 06:45 PM

I use that bullet a lot, though I don't use that powder. I have AA2230 behind the 65 grain Sierra GK, and it's about a grain under max. Per Sierra and a phone call I made a year or so ago, you can use the load data for the 63 gr Sierra SMP for the 65 gr GK. That's what I did, but as always I started near min load and worked up to what shot well.

July 12, 2013, 06:45 PM	#3
603Country Senior Member Join Date: January 6, 2011 Location: Thornton, Texas Posts: 3,998	I use that bullet a lot, though I don't use that powder. I have AA2230 behind the 65 grain Sierra GK, and it's about a grain under max. Per Sierra and a phone call I made a year or so ago, you can use the load data for the 63 gr Sierra SMP for the 65 gr GK. That's what I did, but as always I started near min load and worked up to what shot well.