Thanks Gents. I should have separated into two postings the heads pace issue and the locking lug length issue. The head space issue I feel is OK. The head space issue is good using my coin field gauge. I also used the coloring of the backside of the lug. Operating stripped bolt handle about 20 times I have good wear marks on back side of both lugs. Now the locking lug issue. I have been told that the * marked bolts should have a left locking lug length of .0725. I measure my Eddystone's * at .0618. The locking lug length is what I am confused on. See above postings with pictures Thanks