Before I get to far I need to be clear here.

1- These are prototype barrels and by no means are they the final rendition or finish product that Criterion will be selling. They sent a select few a barrel or two to check out and get some of the bugs worked out.

2- I have saami spec headspace gauges. Brian over BDLicon pointed out to me that I need to be using a .074 gauge. So I added a few pieces of tape to the back side of the nogo to get me out to .073. I know it's not the most precise method but does work in a pinch.

The chamber must be finished cut because with the action in place and checked with a headspace gauge (.073) it starts to close but doesn't go all the way and this is with a #0 bolt head.

I'm honestly going to suggest to Criterion they need to make it so the barrel is under indexed more and allow the gunsmith to chuck up the barrel in the lathe and face the barrel back where needed. I really feel they're going to have a bunch of headaches with customers out there who think this will fit and index on there action right out of the box and it's a lot easier and cheaper to just have to set the barrel back then to find and purchase some breeching rings. Your thoughts?