300 win mag headspacing shilen drop in

[KRP]

What do you mean the NO-GO didn't fit like normal? Beyond that, tightening the nut increases headspace, I'd say your barrel moved or your extractor is hanging up on the gage.

[shootahoe]

What do you mean the NO-GO didn't fit like normal? Beyond that, tightening the nut increases headspace, I'd say your barrel moved or your extractor is hanging up on the gage.

the no go didn't fit that is normal... the go fit that is normal... i watched for barrel movement in the vise but there was none as i tightened the nut onto the recoil lug and action. after that was said and done i reassembled the extractor and ejector. then i checked the headspace again and NOTHING would chamber i.e. go gauge or resized brass.