Again I appreciate all the good feedback. My Armaspec buffer shipped today so I will know by next week. Shooting a match Sunday, but I will leave the Kaw Valley buffer and spring in there till I have time to try it out. Like I said, if it doesn't work as expected I have a back up plan to make it work correctly.
FWIW...................... The Kaw Valley 7.5oz buffer and .308 spring they ship with it work very well. When I started this endeavor I loaded many, many different loads with 115gr, 124gr and 147gr. My home built gun ate it all ! As long as you feed it round nose bullets, it's very happy!