I think I would set it back up to check head space again. Every barrel I've install I tighten it to the go gauge, then back off a hair and check with the no go. Then I re-insert the go tighten the nut (30ft lbs) and re-inspect with both gauges. It's been flawless every time. with 308Win, 243 Win, and 6.5-06 regardless of the receiver the barrel went on. I even shared the same loads and brass with the barrel/action without resizing with no issues. Both on Savage actions (10, 116, and Axis) and the Mausingfield I run now.