Headspace Issues

[Punkface]

I built an upper with a Rainier Arms 18" match SPR barrel and a Rainier Arms NiB BCG. When I used Forster .223 go gauges, the go gauge would not chamber. I removed the extractor and the extractor pin before checking headspace. However, when I used a different bolt it headspaced fine.

I called Rainier Arms about it and they said I got my result because I used a .223 Remington go gauge rather than a .223 wylde go gauge.

If the barrel is supposed to be able to shoot .223 Remington shouldn't the .223 Remington go gauge have chambered then?

Am I wrong in my assumption or could the bolt be out of spec or the headspace need to be corrected?

[sportbikeco]

do you have another barreled upper to test the possibly out of spec bolt on?

[Great-Kazoo]

A pm to bert / bptactical should answer the question.

[Punkface]

Bert said I should be fine and to watch for overpressure.