If I remember correctly the person doing the chamber stated it was the reamer dimension plus one. That would make it .792 if it was minus one. But again I would need to visit with the smith. again as stated the go no go checked out. I had it chambered with Altus Precision. When I get my powders together I will see if it will shoot. What cbto are the 215 at .225?
With that freebore you will be able to hit the 3100 velocity node.