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Posted: 3/30/2007 5:58:31 AM EDT
| When using a no-go headspace gauge does the extractor and ejector need to be removed from the bolt? |
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bolt is also used in the headspace measurment. You check headspace on new builds to save your fingers and face from the rare chance somthing is not right. Man built your rifle man makes mistakes. Limit your mistakes. On the USGI HS you do not have to remove the ejector. On comerical models you do. |
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Got a linky to those? Wolf 
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http://www.billricca.com/prod06.htm www.billricca.com/prod06.htm |
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Most reputible builders will check headspace with a new bolt and will usually offer that bolt to you as a "matched" bolt. If you use your own, new or used, all bets are off, though it would be a rare thing to have excessive headspace on a new build. A NO-GO gauge won't tell you a lot about your weapon's headspace. A new .223 chambered rifle should not swallow a NO-GO gauge, but if it does it is not necessarily unsafe, it just means that you'll have less use/life out of that barrel before it becomes unsafe. You'd need a FIELD gauge to actually determine if your weapon has unsafe headspace. Despite the ominous sound of "NO-GO", it is not a gauge that really determines anything specific, just sort of mile marker on your way from start to finish. A live round can be substituted for a GO gauge, obeying all safety rules of course. If your new weapon chambers a live round, meaning the bolt closes fully on it and is ready to fire, then it passes the GO gauge. A 5.56 chamber is a little more complex if you are using commonly available .223 gauges to determine headspace. A brand new 5.56 chamber may well and in my experience usually does close on a NO-GO gauge before you've even fired a round out it. This doesn't mean you have more headspace, it's just that the 5.56 chamber is slightly longer than a .223 chamber, so using .223 gauges requires a bit of translation. |
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