Maybe someone can set me straight...

I have a Gen 1 model 110 in 22-250. It is a standard shank with the 7/8" long barrel nut. I ordered a new barrel for it in 6mm Creedmoor and the threads match and barrel looks fantastic, but the new barrel is flat at the bolt face the old barrel has a 1/2" step in at the bolt face. So the bolt actually seats into the old barrel by about 1/2" before it would contact the barrel. What am I missing. I was expecting the new pre-fit barrel to have the same step/relief. Since the new one doesn't have this relief it will not screw in as far, and I think, not far enough.

Anyone have any thoughts on the matter?

Thank you.