I am using a Bushmaster w/24" SS 1-9 twist barrel, loaded with H-335, Sierra 52BT bullets, WSR, OAL @ 2.255", with mixed brass, and Custom 1 1/4# trigger The powder is dirty, but is not subject to heat, and shoots into .41 @ 100 5 shot groups. This is my go to PD load. I also have a build up AR...