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Gunsmithing Has anyone opened up a barrel channel?

Not too bad. I used a deep socket and 40 grit sandpaper.
barrel channel.jpg
 
I did a Manners carbon fiber stock with a closet rod dowel wrapped in sandpaper- it came out really well and I just used a black sharpie to make the sanded areas look the same as the rest of the barrel channel.
 
Are you guys opening them up the same ID all the way through or tapering them. I used a dremel on my grayboe stock and contoured it to fit the heavy palma profile pretty dang nicely.
 
I opened up mine after it failed the dollar bill test.. ran a dollar bill down the length of the barrel and it kept hanging up in a couple of spots.. I took the barreled action out and wrapped 60 grit sandpaper around a 7/8" dowel.. finished it up with 220 until nice and smooth.. a little matte black spray paint and finished the job up.. looks factory, and now the barrel is completely free floated.. all said and done, it took about an hour..
 
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60 grit sheet of sand paper with the barrel in stock and just let the sand paper wrapped under the barrel face down and then grab the ends of the sand paper and work it back and forth. This will give you very good results so your stock matches the contour of your barrel.
 
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