D dmachine Sergeant Full Member Minuteman Jul 22, 2004 191 0 RI May 7, 2010 #1 May 7, 2010 #1 What are you guy's using for the .338 Whisper, in a bolt action, for subsonic loads? 10.3gr of Power Pistol was one, 15gr of 4227 was another. (Both for the 300 gr SMK) Looking for something more accurate & less temp sens. if possable.
What are you guy's using for the .338 Whisper, in a bolt action, for subsonic loads? 10.3gr of Power Pistol was one, 15gr of 4227 was another. (Both for the 300 gr SMK) Looking for something more accurate & less temp sens. if possable.
