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The Range
Rifle & Shotgun Discussion
How many AR's have you built AND headspaced?
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<blockquote data-quote="Blitzfike" data-source="post: 2368149" data-attributes="member: 807"><p>AR barrels that come with the barrel extension have supposedly already been headspaced. When you take a barrel blank and thread it for the barrel extension, you then ream the chamber and set headspace by checking with a gauge with that extension in place and the bolt in battery. This is usually done with a pull through reamer, checking headspace with the go - no go set as you ream. All the AR-15 type rifles I have ever checked headspace on were within spec. I have made both rifle and pistol barrels from blanks over the years and it is not rocket science, it just requires a great deal of attention to detail and some appropriate tools. There is somewhat of a learning curve when it comes to the machine work when doing threading and finishing on a lathe, but as I said, not rocket science. When you consider the labor involved, it has to be a higher cost barrel for me to make one today. I am currently making a 300AAC barrel from a blank for one of my Savage bolt guns. I have the blank turned, threaded on both ends and I have only to cut the chamber and finish the metal to complete it. For what I spent on the tooling (headspace gauges, chamber reamer) and the blank, I could have bought one finished. Now, when through, I have the tools remaining for my next project and the cost will be much less for that one.</p></blockquote><p></p>
[QUOTE="Blitzfike, post: 2368149, member: 807"] AR barrels that come with the barrel extension have supposedly already been headspaced. When you take a barrel blank and thread it for the barrel extension, you then ream the chamber and set headspace by checking with a gauge with that extension in place and the bolt in battery. This is usually done with a pull through reamer, checking headspace with the go - no go set as you ream. All the AR-15 type rifles I have ever checked headspace on were within spec. I have made both rifle and pistol barrels from blanks over the years and it is not rocket science, it just requires a great deal of attention to detail and some appropriate tools. There is somewhat of a learning curve when it comes to the machine work when doing threading and finishing on a lathe, but as I said, not rocket science. When you consider the labor involved, it has to be a higher cost barrel for me to make one today. I am currently making a 300AAC barrel from a blank for one of my Savage bolt guns. I have the blank turned, threaded on both ends and I have only to cut the chamber and finish the metal to complete it. For what I spent on the tooling (headspace gauges, chamber reamer) and the blank, I could have bought one finished. Now, when through, I have the tools remaining for my next project and the cost will be much less for that one. [/QUOTE]
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How many AR's have you built AND headspaced?
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