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General Categories => General Firearm Discussion => Topic started by: RobertH on August 30, 2014, 05:51:53 PM

Title: .308/7.62x51 Go/No-go gauge
Post by: RobertH on August 30, 2014, 05:51:53 PM
i am assembling a 308 AR.  when my Midway USA parts show up, i will be just about done.  since i'm using different parts from several companies i would like to check headspace on the barrel.  anyone have a .308 or 7.62x51 Go/No-go gauge i can borrow?
Title: Re: .308/7.62x51 Go/No-go gauge
Post by: whatsit on August 30, 2014, 10:08:43 PM
Are you installing your own barrel extension?
Forgive my ignorance, but I have read the extension (on the ar-15 platform) is what sets the headspace and once it is installed, you don't really need to do it again.
Maybe the ar-10 platform is different. I bring it up mostly out of curiosity to see if you know something I don't. :)
Title: Re: .308/7.62x51 Go/No-go gauge
Post by: RobertH on August 30, 2014, 11:03:50 PM
well im a noob when it comes to go/no-go gauges.  ive never headspaced any AR15's i've assembled.  but since the LR-308/AR10's are completely different since there is nothing that is "standard" i just want a little more confidence before shooting it.  im in no rush, as i am not close to being done yet.  everything i am building is DPMS styled, so it should be all GTG, but we'll see after i put everything together.

so should i even worry about checking headspace?
Title: Re: .308/7.62x51 Go/No-go gauge
Post by: shooter on August 30, 2014, 11:30:22 PM
 maybe you should let someone else fire it first!
Title: Re: .308/7.62x51 Go/No-go gauge
Post by: OnTheFly on August 30, 2014, 11:40:41 PM
maybe you should let someone else fire it first!

Maybe SemperFiGuy would like to volunteer.   ;D

Fly
Title: Re: .308/7.62x51 Go/No-go gauge
Post by: bkoenig on August 31, 2014, 08:09:18 PM
I wouldn't worry about it.  Headspace is set when the barrel extension is installed.
Title: Re: .308/7.62x51 Go/No-go gauge
Post by: SemperFiGuy on September 01, 2014, 01:06:56 PM
Quote
Maybe SemperFiGuy would like to volunteer.

Well, now, that's a tender thought.

But I was flame-hardened in a culture that sez, "never, never ever volunteer".   ['Cause you'll get shoved right into the middle of it quick enough.]

sfg
Title: Re: .308/7.62x51 Go/No-go gauge
Post by: NE Bull on September 01, 2014, 06:00:46 PM
Well, now, that's a tender thought.

But I was flame-hardened in a culture that sez, "never, never ever volunteer".   ['Cause you'll get shoved right into the middle of it quick enough.]

sfg
:D

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