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Joined: Aug 2003
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Aug 2003
Posts: 39,352 Likes: 43 |
Ignore the 5-6 inch groups, that's not the interesting problem here. The problem is why it's grouping LOW.
Group size is a function of the chamber/crown/load and bullet likes - why it's grouping consistently LOW is what's bugging Dan I suspect and I sincerely doubt swapping from what he's shooting to a top tier bullet/load is going to make it go from 5-6 and a foot low to 1-2 and dead on. It will help one of them and probably not the elevation IMO.
There has to be a mis alignment there to cause that with the ele maxed out on the scope.
Any chance the scope crapped the bed and while you've maxed the ele - its not actually moving?
Me
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Joined: Aug 2013
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If the other barrel you installed still shoots low you may need to square up the reciever. Brownells sells a tool for a power drill. I've seen some have the windage maxed out and still shoot wide. Squaring the reciever thread face cured it.
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Campfire Regular
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OP
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I just got back from the range, and here are the results....
The old receiver with the new barrel worked just fine. I was able to sight in at 100yds without issue and shot a 2" group. Nothing special, but it worked.
The old barrel on the new receiver had the same issues...a foot low and horrible accuracy.
I'll call Brownells in the morning and see if they'll let me return the bad barrel.
Thoroughly enjoying Alaska since 2001.
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Joined: Nov 2011
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
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Thanks Dan, we appreciate the update.
Glad to know we could steer you in the right direction.
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
You cannot over estimate the unimportance of nearly everything. John Maxwell
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Joined: Jan 2005
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Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2005
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Sucks when that happens, but its good you figured it out!
We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....
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Joined: Nov 2011
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
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Pretty hard to put it together wrong if you followed instructions.
The hitting low issue, can be resolved with offset burris ring inserts.
But I'd bet the barrel is a bit non concentric and causing the issue.
5-6 inch groups could come from cheap ball ammo, thats not unheard of.
But the low impact is either the mount, and would be hard to believe with a La Rue supposedly. Or the barrel.
Jeff First post got it right. Good Job Jeff.
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
You cannot over estimate the unimportance of nearly everything. John Maxwell
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Campfire Outfitter
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Pretty hard to put it together wrong if you followed instructions.
The hitting low issue, can be resolved with offset burris ring inserts.
But I'd bet the barrel is a bit non concentric and causing the issue.
5-6 inch groups could come from cheap ball ammo, thats not unheard of.
But the low impact is either the mount, and would be hard to believe with a La Rue supposedly. Or the barrel.
Jeff First post got it right. Good Job Jeff. For an "educated, corner-office" type, you don't read too damn well.
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Joined: Nov 2011
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Campfire 'Bwana
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Campfire 'Bwana
Joined: Nov 2011
Posts: 31,139 Likes: 5 |
I just got back from the range, and here are the results....
The old receiver with the new barrel worked just fine. I was able to sight in at 100yds without issue and shot a 2" group. Nothing special, but it worked.
The old barrel on the new receiver had the same issues...a foot low and horrible accuracy.
I'll call Brownells in the morning and see if they'll let me return the bad barrel. My reading comprehension is just fine. But since drawing the conclusion involved an attention span that could transverse 40 posts over a weeks time, it doesn't surprise me that you missed it.
You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.
You cannot over estimate the unimportance of nearly everything. John Maxwell
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Joined: Jan 2005
Posts: 57,494
Campfire Kahuna
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Campfire Kahuna
Joined: Jan 2005
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Eh, I don't sweat these types of folks too much....
No big deal but generally with an AR if there is an issue like this one, its almost always going to be a bad tube with that bad of accuracy and that far off on impact..
Not always but mostly. At least in the "couple" of barrels I"ve dealt with over a "year or two"
Jeff
We can keep Larry Root and all his idiotic blabber and user names on here, but we can't get Ralph back..... Whiskey Tango Foxtrot, over....
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I just got back from the range, and here are the results....
The old receiver with the new barrel worked just fine. I was able to sight in at 100yds without issue and shot a 2" group. Nothing special, but it worked.
The old barrel on the new receiver had the same issues...a foot low and horrible accuracy.
I'll call Brownells in the morning and see if they'll let me return the bad barrel. the irony here is huge....
Guns don't kill people, drivers with cell phones kill people.
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Joined: May 2007
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Campfire Outfitter
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How do you figure? The old receiver with the new barrel worked just fine.
The old barrel on the new receiver had the same issues...a foot low and horrible accuracy.
your flippant remarks which you so adeptly sling
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Joined: May 2007
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the irony here is huge....
Don't doubt him, he's shot mofos in the face. And can do pull-ups.
your flippant remarks which you so adeptly sling
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I know. that's why I worded my insult carefully....
no worries. he's having another meltdown and will be flushed again any time now...
Guns don't kill people, drivers with cell phones kill people.
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The old barrel on the new receiver had the same issues...a foot low and horrible accuracy.
I'll feel like I'm playin' cards with my brother's kids". The end of the upper needs to be trued 90 to its centerline . You know, the part the BARREL seats against.
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the irony here is huge....
Don't doubt him, he's shot mofos in the face. And can do pull-ups. NEVER said I've shot anybody. Fat MOFO's like you like to make up all manner of things though.
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The old barrel on the new receiver had the same issues...a foot low and horrible accuracy.
I'll feel like I'm playin' cards with my brother's kids". The end of the upper needs to be trued 90 to its centerline . You know, the part the BARREL seats against. your brother's kids must tire of taking your money. read again slowly. I just got back from the range, and here are the results....
The old receiver with the new barrel worked just fine. I was able to sight in at 100yds without issue and shot a 2" group. Nothing special, but it worked.
The old barrel on the new receiver had the same issues...a foot low and horrible accuracy
I'll call Brownells in the morning and see if they'll let me return the bad barrel.
Guns don't kill people, drivers with cell phones kill people.
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Assuming that Dan's old barrel worked, it appears the problem is in the new receiver.
Old receiver + Old barrel = OK
Old receiver + New barrel = OK
New receiver + New barrel = No go
New receiver + Old barrel = No go
So, the variable I see is the new receiver.
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The old barrel on the new receiver had the same issues...a foot low and horrible accuracy.
I'll feel like I'm playin' cards with my brother's kids". The end of the upper needs to be trued 90 to its centerline . You know, the part the BARREL seats against. 4321, are you really this dense? Or is it just some joke I'm missing?
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I did read it you silly fuggg, unlike you, I'm smart enough to interpret it. The axis of the threads aren't concentric with the END OF THE UPPER. That is why the barrel nut will snug but there is still enough vertical play in the barrel, where it seats against the upper, to cause the inacurracy.
Only a small portion of the barrel flange is in contact with end of the upper.
Last edited by 4321; 12/15/14.
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