Jim,
Start with a shell in the box, when the bolt comes forward and the shell starts uo into the bolt face it does not go completely up into the face smoothly, the rim goes 3/4 of the way into the face and stops and as you push forward you not in alignment to enter into the chamber, so my blacksmitth gunsmith idea is either the bolt face/extractor need a tune up or the shell is not coming out the feed rails like it should, the shell is about a inch from being in the chamber when the alignment issue stops progress. Manually with the bolt out you can put a case behind the extractor and lock it in, it has been widened but there is something not meshing up.
