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10/9/2006 6:20:50 AM EDT
So I bought a new barrel and rail for my RRA upper. Pulled the old barrel installed the new one and torqued it to 65 ft lbs (Daniel Defense barrel nut specs 50-75 ft lbs)  and can barely keep it on a paper plate at 100 yards. Any ideas? I pulled the barrel and reinstalled it just to be sure, and can't see where I did anything wrong. It has a new CMT bolt, Daniel Defense 9.5 lite rail and pri folding front sight/gas block-if that helps.
10/9/2006 6:56:00 AM EDT
[#1]
FSB may be canted???  other than that i'm not really sure...check the crown of the new bbl...also check the flash hider if you have one on there and make sure it is in no way in the path of the bullet
10/9/2006 6:56:52 AM EDT
[#2]
Make sure the barrel is crowned properly.
10/9/2006 7:10:37 AM EDT
[#3]
When you clean it does it feel like it takes a uniform amount of pressure to push a patch through the bore or is it tight in some places and loose in others?  I had a couple of very expensive high end barrels that had tight and loose areas in the bore and they wouldn't shoot for $hit.
10/9/2006 7:13:39 AM EDT
[#4]
Front sight base is good, I tried to zero with that, a EOtech and a Acog. Flash hider worked on the old barrel, and as near as I can tell the crown is OK, I have no scientific way of checking other than my mark1 eyeball
10/9/2006 7:14:38 AM EDT
[#5]

Quoted:
When you clean it does it feel like it takes a uniform amount of pressure to push a patch through the bore or is it tight in some places and loose in others?  I had a couple of very expensive high end barrels that had tight and loose areas in the bore and they wouldn't shoot for $hit.


There are a couple rough spots, I don't know that they are any worse than other barrels but maybe?

ETA: it feels more rough than tight in spots
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