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AR15.COM
1/11/2015 6:13:17 PM EDT
Any one running an adjustable block on their 7.62 OBR?
1/11/2015 6:49:40 PM EDT
[#1]
        OBR's came with the PST (Normal - Suppressed).  Are you talking for more than two positions or something non-Larue?

 
1/11/2015 6:51:06 PM EDT
[#2]
Something beyond the selector it comes with.
1/11/2015 8:28:21 PM EDT
[#3]
Why would one do that?
1/11/2015 11:19:05 PM EDT
[#4]
All my loads that shoot well ( .3 MOA) tear up the brass and don't cycle reliably at pressure levels well below max.  Quick load places them about 80-85% and velocity matches the calculations. The ones that cycle well shoot .75 MOA. It kills me to shoot it so far below its potential. 118LR and Federal gold match all cycle, with the rim bent to far to reload from the extractor. Called the shop and have not been able to sort it out.
1/11/2015 11:30:41 PM EDT
[#5]
Quote History
Quoted:
All my loads that shoot well ( .3 MOA) tear up the brass and don't cycle reliably at pressure levels well below max.  Quick load places them about 80-85% and velocity matches the calculations. The ones that cycle well shoot .75 MOA. It kills me to shoot it so far below its potential. 118LR and Federal gold match all cycle, with the rim bent to far to reload from the extractor. Called the shop and have not been able to sort it out.
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Welcome to the Wall of Claim.

http://www.ar15.com/forums/t_16_17/51___ARFCOM_1_MOA_ALL_DAY_LONG__Challenge_.html
1/12/2015 3:24:20 PM EDT
[#6]
clean and oil it?
check buffer weight?
or buffer spring?
I've never heard of anything but HK91s mangling brass
1/13/2015 12:09:06 AM EDT
[#7]
If not using full length resize, is it sticking to the chamber walls?

I know of another that peels case rims (likely) because it needs more resizing.