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Posted: 11/27/2014 1:38:39 PM EDT
| I've been having problems with the Midwest barrel nut. The rail broke free, I took it apart and found the barrel nut was hand tight. I torqued it to 35lbs and reinstalled the rail. Afterward it was shooting 5". I just took it back apart and can't find any obvious issues so I'm trying to reinstall but I can't get the nut to index with the next gas tube hole. Past 35lbs it just won't line up. Should I just man up on it or is there another solution? |
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Quoted:
Done. Tightened and loosened until I got it indexed. I believe typically I see instructions to loosen and tighten a total of 3x's with the barrel nut wrench (not just hand tight). Then on the third time you tighten slightly, then index to the next tooth so the gas tube slides through. |
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Quoted:
I believe typically I see instructions to loosen and tighten a total of 3x's with the barrel nut wrench (not just hand tight). Then on the third time you tighten slightly, then index to the next tooth so the gas tube slides through. Quoted:
Quoted:
Done. Tightened and loosened until I got it indexed. I believe typically I see instructions to loosen and tighten a total of 3x's with the barrel nut wrench (not just hand tight). Then on the third time you tighten slightly, then index to the next tooth so the gas tube slides through. I think the builder must have missed this one in the rack when he was assembling a dozen of them or something. This thing has been giving me fits. I know the barrel nut was not properly torqued but I don't know if that is my only problem. I'm gonna put a different scope on it and take it back out to the range. If it still shoots like crap then the only thing I got left is to assume I trashed my barrel. The range officer stuck a yellow range flag in the end of the barrel and I may have shot it without removing the flag. Not sure though, can't see any damage and I'm not sure that soft plastic flag could hurt anything anyway. Keeping my fingers crossed. |
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"The range officer stuck a yellow range flag in the end of the barrel and I may have shot it without removing the flag. Not sure though, can't see any damage and I'm not sure that soft plastic flag could hurt anything anyway. Keeping my fingers crossed."
Sorry to laugh at you but that is almost as funny as when I put a hole through my friends chrony! AL |
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Some of those MI rails have a small inside diameter. Is your gas block contacting it at all? If so, that will cause some serious accuracy issues.
I have a clamp-on low-profile block along with an MI Gen2 SS rail. The screw heads were contacting the rail. I had to use socket head cap screws with a low-profile head to give me necessary clearance |
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Quoted:
"The range officer stuck a yellow range flag in the end of the barrel and I may have shot it without removing the flag. Not sure though, can't see any damage and I'm not sure that soft plastic flag could hurt anything anyway. Keeping my fingers crossed." Sorry to laugh at you but that is almost as funny as when I put a hole through my friends chrony! AL 
The damn flag must have been pointing down and couldn't see it from behind the rfile. Normal practice is to put the flag in the open chamber but the upper was not mounted so I think he stuck one in the barrel. I can't really confirm that it happened, I'm just thinking that there is about a 70% chance that it happened or even if it did, it may have only been stuck into the flash suppressor. I don't know but its one of 3 things are the issue.....damaged crown, barrel nut wasn't tight or bad scope. Either way, next time I shoot it I'll know. If it is the barrel, then I can cut, the end and have a longer flash suppressor installed or replace it. Either way, I put this rig together to be a tack driver, not 5moa, so that ain't gonna work. |
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Quoted:
Some of those MI rails have a small inside diameter. Is your gas block contacting it at all? If so, that will cause some serious accuracy issues. I have a clamp-on low-profile block along with an MI Gen2 SS rail. The screw heads were contacting the rail. I had to use socket head cap screws with a low-profile head to give me necessary clearance No contact, it is a PSA upper with stainless barrel. They used a lopro troy type block |
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