CFJunkie, You are right about barrels preferring different bullets. Can be absolutely maddening trying to find the magic combination not mention expensive buying boxes of bullets to test.

The only exception I've seen for far is the McGowan barrel on my first 223. I call it H1 for Hammer #1. That thing shoots just about anything I put through it really well. The McGowan on H2 is obviously more finicky and has only digested the 77gr TMKs to my liking. I may take your suggestion to try the 69gr TMKs just for grins. Thanks!