The H2 buffer isn't the lightest buffer out there. Also, there are lighter bolt carriers available. I'd try reducing mass behind the bolt before I reduced the spring strength to keep feeding reliable. JP makes some light bolt carriers. BravoCo. has standard and H weight buffers.
"9mm has a very long history of being a pointy little bullet moving quickly" --Sevens
Last edited by Willie Lowman; March 10, 2013 at 12:25 PM.