Thanks for the inputs. Took it to the range on Friday w/ some 168 gn bullet loads. Had a heck of a time trying to get a consistent sight picture. Old eyes and an aperture on the barrel were not working well together. My buddies carbine (converted rifle) shot decent groups My best was a 3" lateral string at 50 yards with 38.6 gn of 4064 w/ the 168's.   I had a mystery load of a light (under 150 grains and 1900 FPS round nose and
wouldn't feed from the magazine that actually shot the best just, under a 2" group. Barrel shows rifling, it may be one of the barrels that is over .308. I will have to slug it and see. 

Airborne,
Mark