Hello all. I just finished a 24” 6.5 creedmoor dpms build and it won’t pass the 6.5 creedmoor go gauge headspace test. I took the bolt out of the BCG, removed the cotter pin. Removed the firing pin, cam, extractor and injector. I then replaced the cam, firing pin and cotter pin. I then replaced the bolt back into the BCG. Next, I slid the 6.5 creedmoor headspace go gauge into the barrel. I then took the BCG and proceeded to gently slide the charging handle and it through the upper towards the barrel. The bolt head seemed to not go all the way into the star chamber of the barrel. There was about a quarter inch protruding out of the back of the upper. However, it passed the snap cap function test numerous times. The action closes perfectly. When I charge it, the snap cap goes into the chamber, when I charge it again it ejects the snap cap and inserts the other one. When I pull the charging handle again it ejects the cap. But because it won’t pass the headspace test, I won’t feel safe firing it. I was told I should test it. Someone please advise, why won’t it pass headspacing, and is it safe to test it, since everything is new? Thank you.