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AR15.COM
8/1/2010 9:09:27 PM EDT
i recently purchased a dd 1x7 chromelined barrel and cant get it to zero.  I've tried 3 sets of sights, 3 uppers, 5 different torque settings and 11 different brands of ammo and its still shooting to the left of center by 11" from a bench at 50yards
8/2/2010 2:58:16 AM EDT
[#1]
I doubt it's the barrel.

The question is, how good are your groups, no matter where they are printing?  That would be a start.

Have you talked directly to DD?

I've never had a problem with one of their products, but dealing with them on special orders/out of stock items has been fantastic.

Before posting "bad barrel" maybe something like "trouble sighting in" would be more appropriate.
8/7/2010 10:06:13 PM EDT
[#2]
I've shot this barrel. There is no pattern at all off sand bags at 50 yards. The issue is definitely the barrel. Swapping everything else around no issues at all, we've spent a good deal of time trouble shooting it. It's all over the place.
8/9/2010 2:57:03 AM EDT
[#3]
Like KILLERB6 said....call DD customer service and let them sort it out.
That would be a much faster approach at solving the issue.
8/9/2010 6:04:27 AM EDT
[#4]
How does the crown look?
8/11/2010 6:32:37 AM EDT
[#5]
Quoted:
i recently purchased a dd 1x7 chromelined barrel and cant get it to zero.  I've tried 3 sets of sights, 3 uppers, 5 different torque settings and 11 different brands of ammo and its still shooting to the left of center by 11" from a bench at 50yards


Hey man.  If you haven't already, give our customer service line a call.  We will be happy to take a look at your barrel and try to figure out what the underlying issue is.  866-554-4867

S/F
Joe