Thanks everyone. If only it could talk...

My bigger problem now is the headspace. If i'm calculating things correctly, I need a bolt head that's about .640" just to pass the field gauge. The spare bolt I bought came with a "0" sized head that also had a 19T stamp on it. I was under the impression that was just for 7.62 rifles, but it looks like it has a 303 extractor. That aside, the "0" size measures right around .631 and needs a .010 shim to pass the field test.