I rebarreled my 700 308 with a SS Bison barrel with a Remage set up. I have checked the headspace over and over and it closes perfectly on the go gauge, and won’t lock on the no go gauge. I can load, shoot and eject spent brass without a problem. Bolt cycles very smoothly. The problem is when I try to unload a live round. I have to tap the bolt back with a mallet, and the the bullet stays in the barrel, and the casing comes out. I then have to rod the bullet out. I have cleaned the barrel and chamber maticulously and continue to have the same problem. Any ideas?