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Posted: 10/13/2015 3:40:23 PM EDT
| Just about to finish my first build. Do I need to check the head space before the first time I fire it and if needed how? Thanks. |
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Just about to finish my first build. Do I need to check the head space before the first time I fire it and if needed how? Thanks. It's rare for an AR built with quality parts to be out of spec - but it's always safest to check headspace. FWIW : I have done multiple builds and never checked any 
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Quoted:
It's rare for an AR built with quality parts to be out of spec - but it's always safest to check headspace. FWIW : I have done multiple builds and never checked any Quoted:
Quoted:
Just about to finish my first build. Do I need to check the head space before the first time I fire it and if needed how? Thanks. It's rare for an AR built with quality parts to be out of spec - but it's always safest to check headspace. FWIW : I have done multiple builds and never checked any This. But the first shot is always a "look away" shot just in case. 
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This. But the first shot is always a "look away" shot just in case. Quoted:
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Quoted:
Just about to finish my first build. Do I need to check the head space before the first time I fire it and if needed how? Thanks. It's rare for an AR built with quality parts to be out of spec - but it's always safest to check headspace. FWIW : I have done multiple builds and never checked any This. But the first shot is always a "look away" shot just in case. 
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Quoted:
This. But the first shot is always a "look away" shot just in case. Quoted:
Quoted:
Quoted:
Just about to finish my first build. Do I need to check the head space before the first time I fire it and if needed how? Thanks. It's rare for an AR built with quality parts to be out of spec - but it's always safest to check headspace. FWIW : I have done multiple builds and never checked any This. But the first shot is always a "look away" shot just in case.  So true. I set the handguard on a rest and hold it as far away as I can while making sure it will hit the back stop.
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just buy the gauges, they are a good tool to have. I swapped a couple of barrels before I got the gauges and haven't had any issues but after getting the gauges and checking everything the one gun had a tight chamber that would barely close on a GO gauge.
Out of the 7 rifles I've checked I had two with tight chambers and the rest were fine. One of the tight chambers had over 1k through it so I left it alone but the other one was new so I tried a couple fo my spare bolts and found one that worked. |
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Yes you should check headspace.
Follow the manufacturer’s instructions for the gages you use. There is a tolerance range of .003” on the bolt face to the back of the lugs measurement. Since the bolt is part of the headspace measurement the difference in a minimum tolerance bolt and a maximum tolerance bolt can significantly change your headspace. Aside from tolerance stacking there are just mistakes that don’t get caught and are sold. While it is probably a small number compared to the whole, there is never the less a steady trickle of posts. In my experience it is not unusual to find a barrel/bolt combination that will fail the Go gage. Depending on just how far off it actually is typical ammo will probably run ok, but drop in some ammo at the high end of the tolerance range and the fun starts. |
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