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2/24/2009 4:49:57 AM EDT
Hi All,
I am cleaning my AR15 for the first time using the M-Pro 7 kit from Bownells and the bore brush has separated from it's threaded base about 6-7 inches from the muzzle. I only have experience with shotguns and I am reluctant to try and push it back towards the receiver as the manual says this is a no-no. Before I bring it into to the local gunsmith is there anything I can try before giving up? BTW, the brush seemed a little stiff, as it is new, but gave no indication that it was going to seize up that way.
Thanks,
Darryl
2/24/2009 4:56:44 AM EDT
[#1]
I'd stick a .22 cal wooden dowel up the bore from the muzzle end, then put a wood block against the end of it and beat the hell out it with a dead blow hammer.  Make sure the gun is securely vised with a receiver block.
2/24/2009 5:49:23 AM EDT
[#2]
did the entire brush unscrew from the rod, or did the brush itself come apart?

Reversing the direction may only damage the brush, it won't hurt the rifle.
2/24/2009 6:20:32 AM EDT
[#3]
Yes, the brush fell apart. It looks like the threaded end wasn't crimped enough. I going off to get right sized dowel and give this a try. Thanks for all the info. I'll let you know soon.
2/24/2009 7:37:45 AM EDT
[#4]
I couldn't find a .22 caliber dowel at Home Depot only 1/4", any ideas where I can find one? But, I did manage to push the threaded piece back on to the end of the brush with the cleaning handle and with a few light taps of a rubber mallet, loosened the brush so that it slid back out. The barrel looks fine so all is well although I'm going to let MPro7 know about the brush problem.
Lost a great day at the range, but at least I found this great resource. Many thanks for your quick responses and help.
Darryl
2/24/2009 8:50:09 AM EDT
[#5]
Quoted:
I couldn't find a .22 caliber dowel at Home Depot only 1/4", any ideas where I can find one? But, I did manage to push the threaded piece back on to the end of the brush with the cleaning handle and with a few light taps of a rubber mallet, loosened the brush so that it slid back out. The barrel looks fine so all is well although I'm going to let MPro7 know about the brush problem.
Lost a great day at the range, but at least I found this great resource. Many thanks for your quick responses and help.
Darryl


If you take a look at the bore with a good bore scope, may very well see the damage ... however .... you best option is to only use quality brushes with out steel wire centers and inspection each one before using.
2/24/2009 10:13:20 AM EDT
[#6]
Will there be a decrease in accuracy if there are scratches in the chrome lining?
2/24/2009 11:09:02 AM EDT
[#7]
Possibly. But I doubt the brush was hard enough to do any damage. You could have a gun smith take a look with a scope just to be sure or fire it to check accuracy.
2/24/2009 11:40:54 AM EDT
[#8]
Quoted:
Quoted:
I couldn't find a .22 caliber dowel at Home Depot only 1/4", any ideas where I can find one? But, I did manage to push the threaded piece back on to the end of the brush with the cleaning handle and with a few light taps of a rubber mallet, loosened the brush so that it slid back out. The barrel looks fine so all is well although I'm going to let MPro7 know about the brush problem.
Lost a great day at the range, but at least I found this great resource. Many thanks for your quick responses and help.
Darryl


If you take a look at the bore with a good bore scope, may very well see the damage ... however .... you best option is to only use quality brushes with out steel wire centers and inspection each one before using.


are you suggesting that the bristles of the brash brush damaged the chrome lining of the barrel?  I seriously doubt this.
2/26/2009 8:58:43 AM EDT
[#9]
hay find a dewey 22cal rod put on a brass female adaptor on, threads exposed (no tip in threads)then carfully insert into your barrell and push out the bad brush towards the muzzle.
2/26/2009 7:27:27 PM EDT
[#10]
Quoted:
Quoted:
Quoted:
I couldn't find a .22 caliber dowel at Home Depot only 1/4", any ideas where I can find one? But, I did manage to push the threaded piece back on to the end of the brush with the cleaning handle and with a few light taps of a rubber mallet, loosened the brush so that it slid back out. The barrel looks fine so all is well although I'm going to let MPro7 know about the brush problem.
Lost a great day at the range, but at least I found this great resource. Many thanks for your quick responses and help.
Darryl


If you take a look at the bore with a good bore scope, may very well see the damage ... however .... you best option is to only use quality brushes with out steel wire centers and inspection each one before using.


are you suggesting that the bristles of the brash brush damaged the chrome lining of the barrel?  I seriously doubt this.


No, not suggesting the bristles of the brass brush damaged the barrel.  My two concerns (which may at most be worth the electricity used to down load them ;-) are:
1: IF a rifle bore is damaged, you may very well not see it with out a bore scope.  However, as a side note, for the accuracy many expected/get from an AR-15 shooting generic FMJ ammo off hand, rapid fire - a little damage to the bore (away from either end) may not be a major factor.
2: My concern for damage to the bore would be mostly from contact by the center mounting hardware (on some brushes this is steel).  While the chrome is fairly hard, with point contact pressure (i.e. edge of a sheared center twisted steel wire) one could run the risk of damaging the thin plating vs. classic abrasion wear.
2/28/2009 12:13:36 PM EDT
[#11]
From where he said it got stuck it could just be a burr at the gas port.
2/28/2009 5:25:55 PM EDT
[#12]
This topic got me thinking

My Hopps .22 cal bore brushes only go down the bore of my rifle with a good deal of force. Is this normal for small bored rifles? I am use to .30 cal rifles and when cleaning them with the appropriate sized bore brush it does not take near as much force. I also use have problems with patches but I was able to fix that by just cutting them smaller.

3/1/2009 1:01:21 AM EDT
[#13]
Yes, it does take more force since the bristles on the brush are shorter than on a 30 cal brush. Having to trim patches for a jag is not uncommon either due to the tight fitting nature of the jag
4/1/2009 12:39:47 PM EDT
[#14]
Hi All,
Just to update. Rifle is firing well. I've run 100 rounds through and using the iron sights I've been able to keep a 2-2 1/2 group size at 50 yards, which for me is good. Fired  40 rounds at 100 and they were all reasonable close to the center of the paper, certainly close enough to do their job.
Thanks for all of your help. There has been no problems since I switched to a bore brush that hooks onto the shank rather than pressed on.
Be Well,
Darryl
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