I recently assembled a new 308 build using a Rainier Match 16" intermediate barrel and a Toolcraft Nitride BCG. I used a set of Clymer GO/NO GO guages (1.630 & 1.634) to check headspace. The bolt will not close on the GO guage but I can see it turn just a bit but not enough to lock up. The bolt does close on a both factory 308 rounds I've tried when I let the BCG slam closed.

Unfortunately I already painted the barrel black before checking headspace (yeah, I know...stupid) so this probably isnt a simple barrel exchange. What brand and size guages does Rainier Arms use to check headspace? If the chamber is this tight with 308 I'm probably SOL if I want to shoot cheap 7.62 NATO too.

We typically use PTG gauges.

My recent Ra-18” setup would not close on a 308 go gage either

So far it has sorta ran lc stuff

You had the chamber reamed by a gunsmith now though, correct?

Im really not sure if I should even shoot my gun. I'm certainly not spending $60 per guage to get the PTG brand ones like Rainier uses.

We offer headspacing services if you are interested.  If you purchased the bolt and barrel from us, there is no charge for the service.

I purchased the Toolcraft BCG from a different vendor