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March 29, 2010
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When installing a barrel on my 15-2 and attempting to set the proper gap I am running into an issue of the barrel turning into the frame more than I want when I try to tighten the barrel nut. Anyone have any tips on how or what to do to keep the barrel from threading into the frame when tightening the barrel nut??????
Thanks in advance,
Gary
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November 17, 2008
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This sometimes can be a problem. Two suggestions. Be sure the muzzle threads and barrel nut are sparkling clean and well lubed. Also when tightening the nut, I open the cylinder and press my thumb against the forcing cone to add resistance. Sometimes it takes a little trial and effort to get the gap right. If that doesn't work you may have issues with the barrel nut or muzzle threads.
LB
Wisdom is merely the realization of how little one knows, therefore I am wise.
September 26, 2010
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I leave the feeler gauge in place while tightening the nut. A little oil on the pilot of the barrel wrench never hurt either.
Dans Club
May 17, 2009
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LB's thumb method works well for ma also. You might set the gap a little loose and let the barrel turn just a bit with the thumb method. With trial and error you'll get it. Remember if you leave the gap tool in it will compress the spring loaded ball in the frame and result in a tighter gap than you may want, resulting in the cylinder dragging on the forcing cone.
Ed
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February 28, 2009
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DrSparky said:
I leave the feeler gauge in place while tightening the nut.
I use this method and screw down the barrel nut very slowly at the end so that it snugs up very slowly with little torque. After it's snug I go ahead and apply some torque.
Works for me.
-Mike
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March 27, 2009
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With all the above said try them out and see what works best for you, mostly don't over tighten snug is good wrenched down is or can be bad!
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January 24, 2009
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lbruce said:
Be sure the muzzle threads and barrel nut are sparkling clean and well lubed.
I'll 2nd this statement. From my experience, the main reason a barrel will want to turn in the frame when tightening the nut is because of gunk in the threads at the muzzle end.
Take a rag, soak it with gun cleaner (I like carb cleaner myself), wrap the rag around the barrel threads, press your thumbnail into the threads & "unscrew" the barrel through the rag. Do this a couple times. Then soak the rag again, wrap it around your pinky finger & screw the nut onto your finger, a couple times.
Once the threads are squeaky clean, I add a couple drops of Rem oil to the threads, thread the barrel into the frame at the desired gap, add oil to the muzzle threads, slip the shroud over & screw the nut on.
March 29, 2010
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Thanks again, I went with the super cleaning of the muzzle threads and barrel nut along with some LaRue machine gun oil. I also made sure that the frame threads and forcing cone threads were absolutely lube free. Only tried this with the six inch barrel, but so far so good. It will be 
tomorrow(later today technically).
Good night everyone
October 26, 2010
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I also ran into this problem when I first started to play with the mechanics of my DW 715 and taking it apart. I instinctively did what LB suggested and placed my thumb on the other side of the barrel to hold it steady.
Has worked for me pretty much every time.
The issue you may encounter as mentioned before is that the treads either on the barrel nut itself or on the barrel (barrel nut side) is worn or damaged, forcing the barrel to spin when you tighten.
Problem solving goes from cheapest to most expensive so try the thumb trick first, then replace the barrel nut and finally the barrel itself.
Rod
"The very atmosphere of firearms anywhere and everywhere restrains evil interference – they deserve a place of honor with all that's good" – George Washington
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