Where does that number come from?You may come across many that are very close but if you're pairing a new bolt with a barrel that has 15k+ rounds on it then it would be foolish to not check headspace. Considering the safety implications and the relative cost of a gage compared to 15k rounds of ammo it should be a no-brainer.


You may come across many that are very close but if you're pairing a new bolt with a barrel that has 15k+ rounds on it then it would be foolish to not check headspace. Considering the safety implications and the relative cost of a gage compared to 15k rounds of ammo it should be a no-brainer.
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