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Posted: 4/27/2015 4:59:46 PM EDT
[#1]
Go to the SAAMI homepage and look around. I'm sure they have all that listed there.
Greg |
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Posted: 4/27/2015 5:29:30 PM EDT
[#2]
Quote HistoryQuoted:
Go to the SAAMI homepage and look around. I'm sure they have all that listed there. Greg No, just case and chamber dimensions. I asked the same question on the 300 BlkTalk forum but haven't heard anything yet. |
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Posted: 4/27/2015 7:38:08 PM EDT
[#3]
Quote HistoryQuoted:
No, just case and chamber dimensions. I asked the same question on the 300 BlkTalk forum but haven't heard anything yet. Quote HistoryQuoted:
Quoted:
Go to the SAAMI homepage and look around. I'm sure they have all that listed there. Greg No, just case and chamber dimensions. I asked the same question on the 300 BlkTalk forum but haven't heard anything yet. Here you go. Straight from SAAMI's site. I just did a quick search. I've got a new BHW barrel ordered so will be looking at it more in the future just so I can be familiar with it. http://www.saami.org/pubresources/cc_drawings/Rifle/300%20AAC%20Blackout.pdf Greg |
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Posted: 4/27/2015 9:36:19 PM EDT
[#4]
Those are case and chamber dimensions. I need gauge dimensions.
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Posted: 4/27/2015 11:10:27 PM EDT
[#5]
Quote HistoryQuoted:
Those are case and chamber dimensions. I need gauge dimensions. From the case dimensions, you should be able to make a set of GO and NOGO gauges. Here is a comparison of gauges and case for .308: 
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Posted: 4/27/2015 11:18:59 PM EDT
[#6]
My thoughts exactly.
Greg |
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Posted: 4/28/2015 8:09:16 PM EDT
[#7]
Quote HistoryQuoted:
From the case dimensions, you should be able to make a set of GO and NOGO gauges. Here is a comparison of gauges and case for .308: http://media10.dropshots.com/photos/493614/20120802/205420.jpg http://i1052.photobucket.com/albums/s442/f67stang2/b_194151_zpsee88b8a7.jpg Quote HistoryQuoted:
Quoted:
Those are case and chamber dimensions. I need gauge dimensions. From the case dimensions, you should be able to make a set of GO and NOGO gauges. Here is a comparison of gauges and case for .308: http://media10.dropshots.com/photos/493614/20120802/205420.jpg http://i1052.photobucket.com/albums/s442/f67stang2/b_194151_zpsee88b8a7.jpg Thanks for the help. The tolerances are much tighter on the gauge than the chamber and cartridge, which I wasn't expecting. I'm back to purchasing them if I must have them. They should be ground instead of turned for the diameter tolerances of +/- .000I with a taper. If there wasn't a taper I could turn them here at work. |
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Posted: 4/28/2015 8:53:16 PM EDT
[#8]
Headspace gauges are basically "tool and die" parts with really tight tolerances. I got my PT&G 300 Blackout gauges from Midway - they have the NO GO gauge in stock, but the GO gauge is backordered...
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Posted: 4/28/2015 10:49:10 PM EDT
[#9]
Even if you had the capability to grind to a ten thousandths, could you make one for less than $40 - $50?
A fun project but I doubt cost effective. |
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Posted: 4/29/2015 9:20:02 PM EDT
[#10]
Quote HistoryQuoted:
Even if you had the capability to grind to a ten thousandths, could you make one for less than $40 - $50? A fun project but I doubt cost effective. Free unless you count the time involved. |
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Posted: 4/30/2015 7:25:05 PM EDT
[#11]
Quote HistoryQuoted:
Free unless you count the time involved. Quote HistoryQuoted:
Quoted:
Even if you had the capability to grind to a ten thousandths, could you make one for less than $40 - $50? A fun project but I doubt cost effective. Free unless you count the time involved. If you're not used to holding 1/10,000 tolerances, you could be talking about a LOT of time. |
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Posted: 5/1/2015 7:54:00 PM EDT
[#12]
I'm a dimensional inspector at a 30k Sq ft aerospace machine shop. AS9100 and ISO 9001 certified and FFL licensed manufacture. I can measure just about anything with repeatability of .00004 or 40 millionths/1 micron. If we were set up for grinding, which we're not, I would have a friend do the machine work. We trade my reverse engineering for their machining capabilities. I do a little machining but not that tight.
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