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Posted: 9/9/2010 2:35:09 PM EDT
May sound like a stupid question; how much would a loose barrel nut affect accuracy on a 16" Carbine build?

When I first got the rifle, it shot about 0.9 MOA at 100Y with hand loads.

I then upgraded the muzzle device, but didn't have the proper tools so I torqued the barrel. Didn't realize until 3 weeks later when the freefloated handguard shook loose, but I had also loosened the barrel nut during the installation.
Before I realized anything was wrong, I shot the rifle, and could only get about 2-2.5MOA


I sent the rifle in for repairs and just got it back. Should I expect the accuracy to drop back down to about 1MOA now that the barrel nut is retightened? Or did I permanently damage my rifle?
Link Posted: 9/9/2010 2:42:25 PM EDT
The barrel is probably fine. Unless you bent the barrel (VERY hard to do), it'll go back to being accurate, once it's properly reinstalled...
Link Posted: 9/9/2010 2:54:10 PM EDT
It will be fine . We had two customers with builds that had loose barrels. Re torque them and they shot fine.
Link Posted: 9/9/2010 4:50:11 PM EDT
Thanks. So the loose nut does account for the accuracy drop?
Link Posted: 9/9/2010 4:57:29 PM EDT
Yes it does and accuracy will return when the barrel nut is tightened.
Link Posted: 9/9/2010 5:37:15 PM EDT
Probably ought to tighten up the nut at the end of the stock a little too.
Link Posted: 9/9/2010 5:41:03 PM EDT
Originally Posted By PR361:
Probably ought to tighten up the nut at the end of the stock a little too.


nice. Yeah, he's been tightened up
Link Posted: 9/10/2010 5:48:26 PM EDT
Originally Posted By Easy_E:
Yes it does and accuracy will return when the barrel nut is tightened.


Yes. If you can feel any play in the barrel it will not shoot accurately.
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