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Posted: 4/27/2015 3:24:28 PM EDT
[#1]
Are you talking a 300blk AR? If so, no need for headspacing if your barrel was made by a reputable manufacturer. Just like 5.56, the headspace is set when the barrel extension is installed at the factory.
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Posted: 4/27/2015 3:39:37 PM EDT
[#2]
Quote HistoryQuoted:
Are you talking a 300blk AR? If so, no need for headspacing if your barrel was made by a reputable manufacturer. Just like 5.56, the headspace is set when the barrel extension is installed at the factory. Yes, and that is why I asked in an AR15 forum, as well as mentioned my familiarity with the AR platform but sorry for the confusion. Please note as well, that I did not ask if I need to check the headspace. Just hoping to make my own gauges. Equipment, capabilities and tolerances are not in question here either. |
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Posted: 4/27/2015 4:07:38 PM EDT
[#3]
Quote HistoryQuoted:
Yes, and that is why I asked in an AR15 forum, as well as mentioned my familiarity with the AR platform but sorry for the confusion. Please note as well, that I did not ask if I need to check the headspace. Just hoping to make my own gauges. Equipment, capabilities and tolerances are not in question here either. Quote HistoryQuoted:
Quoted:
Are you talking a 300blk AR? If so, no need for headspacing if your barrel was made by a reputable manufacturer. Just like 5.56, the headspace is set when the barrel extension is installed at the factory. Yes, and that is why I asked in an AR15 forum, as well as mentioned my familiarity with the AR platform but sorry for the confusion. Please note as well, that I did not ask if I need to check the headspace. Just hoping to make my own gauges. Equipment, capabilities and tolerances are not in question here either. http://www.saami.org/PubResources/CC_Drawings/C%20and%20C%20Dwgs%20-%20TOC%20-%20Rifle.pdf |
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Posted: 4/27/2015 4:13:46 PM EDT
[#4]
Quote HistoryQuoted:
Yes, and that is why I asked in an AR15 forum, as well as mentioned my familiarity with the AR platform but sorry for the confusion. Please note as well, that I did not ask if I need to check the headspace. Just hoping to make my own gauges. Equipment, capabilities and tolerances are not in question here either. Quote HistoryQuoted:
Quoted:
Are you talking a 300blk AR? If so, no need for headspacing if your barrel was made by a reputable manufacturer. Just like 5.56, the headspace is set when the barrel extension is installed at the factory. Yes, and that is why I asked in an AR15 forum, as well as mentioned my familiarity with the AR platform but sorry for the confusion. Please note as well, that I did not ask if I need to check the headspace. Just hoping to make my own gauges. Equipment, capabilities and tolerances are not in question here either. Try posting this sort of thing in the technical forums next time. You'll get a little less "you don't need to do that" and a little more "here's how ya do that". |
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Posted: 4/27/2015 4:24:37 PM EDT
[#5]
Quote HistoryQuoted:
http://www.saami.org/PubResources/CC_Drawings/C%20and%20C%20Dwgs%20-%20TOC%20-%20Rifle.pdf Quote HistoryQuoted:
Quoted:
Quoted:
Are you talking a 300blk AR? If so, no need for headspacing if your barrel was made by a reputable manufacturer. Just like 5.56, the headspace is set when the barrel extension is installed at the factory. Yes, and that is why I asked in an AR15 forum, as well as mentioned my familiarity with the AR platform but sorry for the confusion. Please note as well, that I did not ask if I need to check the headspace. Just hoping to make my own gauges. Equipment, capabilities and tolerances are not in question here either. http://www.saami.org/PubResources/CC_Drawings/C%20and%20C%20Dwgs%20-%20TOC%20-%20Rifle.pdf Thanks, I have that already but it doesn't help with the gauges. |
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Posted: 4/27/2015 4:25:08 PM EDT
[#6]
Quote HistoryQuoted:
Try posting this sort of thing in the technical forums next time. You'll get a little less "you don't need to do that" and a little more "here's how ya do that". Quote HistoryQuoted:
Quoted:
Quoted:
Are you talking a 300blk AR? If so, no need for headspacing if your barrel was made by a reputable manufacturer. Just like 5.56, the headspace is set when the barrel extension is installed at the factory. Yes, and that is why I asked in an AR15 forum, as well as mentioned my familiarity with the AR platform but sorry for the confusion. Please note as well, that I did not ask if I need to check the headspace. Just hoping to make my own gauges. Equipment, capabilities and tolerances are not in question here either. Try posting this sort of thing in the technical forums next time. You'll get a little less "you don't need to do that" and a little more "here's how ya do that". Good idea, thanks. |
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Posted: 4/27/2015 7:00:51 PM EDT
[#7]
New here also, lots of great info.
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Posted: 4/28/2015 1:28:55 PM EDT
[#8]
Seems complicated. I would imagine your gauges would be slightly smaller than a chamber by .005" according to the spec.
Assuming I'm reading this correctly (never tried before), your maximum length would be 1.0818" measured from the base to .3512" diameter on the 23 degree shoulder. And the minimum would be 1.0748" at the same point. Probably be easier with actual gauge prints. Kind of interesting. What are field gauges like .012" over min? 
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Posted: 4/28/2015 2:41:23 PM EDT
[#9]
Welcome aboard
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Posted: 4/29/2015 5:06:15 AM EDT
[#10]
Welcome to the site
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Posted: 5/3/2015 11:36:54 PM EDT
[#11]
Hey all,
im new to the AR scene. just picked up my first AR-15. Trying to learn more about optics/ammo/ etc. Im familiar with handguns and what not but this rifle business is all new to me. just wanted to say hey! |
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