Rifle is a Stevens action, CBI 28" bull in 6BR, bedded in a Bobby Hart stock. Fired for the first time yesterday and got some extractor marks on the brass and also a shiny spot on the extractor. It was a bit stiff chambering a new round. I loaded Sierra 107 in new Lapua brass at .020 from lands. When setting headspace I used a go-gauge and I measured a piece of scotch tape at .002 thickness and used that on the rear of the go-gauge. When closing the bolt with the taped go-gauge the bolt would go no farther than the 1 or 2 oclock position. Do I have insufficient headspace that would cause this problem? Thanks.