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Posted: 1/18/2011 11:07:28 PM EDT
Here is the muzzle end of the Century AES10B I just picked up locally (private party transaction). Upon removing the flash hider I found the muzzle end was screwed up (maybe due to the sear force of twisting). Any recommendation of diy repair or do I need to have a gunsmith for the job? I am thinking of filing it following by re-crowning.
Thanks. Yg |
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You could do a passable job with a file and a square, but the front sight has to come off. You might be able to make a gage with a spindle and a flat boss that would slip into the bore that would be used as a try gage to use while filing; eyeball the surface, file a little, check for gaps with the gage, mark the high spot with a magic marker, then file a little and repeat until it's square to the world. Knock the burr off, and press on.
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Hows your draw filing technique? You can do it easily with a crisp and sharp mill bastard file. The trick is to make sure the rifle is plumb vertically. With the muzzle at the same height as your elbows draw file, checking the pattern of the metal you removed. Dont take much, just a few strokes and then move to 90 degrees of where you started and repeat. "Walk" your way around the barrel, keeping the file flat. That is why you want the muzzle at elbow height, your body has a way of finding level. Check your work with a small square and only remove what you need. When you have it square chamfer the threads and then re-crown the muzzle.
No need to pull the FSB. It took me longer to type this than it would to do it darn near. |
I'll place my bet against accuracy coming out of that hole! I'll vote with trying to sqare it up. I've touched a couple crowns with a ball mill bit in a drill, since the ball will self center in the bore. Hasn't seemed to hurt the two I hit with it and might have even improved them!
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