head space check

[KYregular]

For all who say no need to check headspace on an AR, heres what I just ran into. Bought a 16" 300 blackout barrel from ballistic advantage to replace my 10.5" ballistic advantage with. went to check headspace and right off the bat would not close on the go gauge. details
foster go no go gauges
toolcraft bcg (same one I used on 10.5")
ejector and extractor removed to test
bolt and bolt pin checked before test
bolt closes on empty chamber but not with the go gauge inserted
looks to me like go gauge is sticking out pretty proud of the chamber
email sent to BA
any advice?

 

[BBBBill]

For all who say no need to check headspace on an AR... Bought a 16" 300 blackout barrel from ballistic advantage...

You just proven what I've always said. No manufacturer is perfect. Always check headspace.
Ballistic Advantage (wholly owned subsidiary of Aero Precision) makes good stuff, but they are as fallible as anyone else. By the way, Aero will tell you that Forster gauges are no good. Specifically that they are too short and will show excess headspace when there is none. Exactly the opposite of what you are experiencing. It will be interesting to hear what they tell you.

 

[KYregular]

You just proven what I've always said. No manufacturer is perfect. Always check headspace.
Ballistic Advantage (wholly owned subsidiary of Aero Precision) makes good stuff, but they are as fallible as anyone else. By the way, Aero will tell you that Forster gauges are no good. Specifically that they are too short and will show excess headspace when there is none. Exactly the opposite of what you are experiencing. It will be interesting to hear what they tell you.

will keep you informed. makes no sense these gauges are fine on one of their barrels and not another

 

[243winxb]

The Bolt and barrel should be from the same manufacture/brand. Been posted on here before about headspace problems in ARs.

But same brand doesnt always solve the problem. Little guys buy parts every where. Not made by them.

https://www.thehighroad.org/index.php?threads/checking-headspace-on-ar-15-rifles.824903/

 

[KYregular]

heres the first response. yep, blaming the gauges. plus, why would on of the same class of barrel be chambered deeper than another.