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March 21, 2011
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I have a .357 15-2V and the barrel came loose while shooting the last time at the range. I tightened it up when I got home but it did make me a little concerned If I am going to use it for deer hunting. How often do you guys tighten your barrels and is it fairly common for them to come loose?
DWF Supporters
June 20, 2010
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I have never had to retighten a barrel after mounting. I think I have only heard that happening once before.
Range Officer
Range Officers
Dans Club
March 27, 2009
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Order a new nut and barrel from EWK and the problem should be solved! I have only had one come loose and that was because I got in hurry with it!
EWK---------->
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Range Officer
Range Officers
May 2, 2009
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Some of mine shoot loose--some don't... could be tightening technique, could be amount of lube.... who knows.
I always have a wrench with me anytime I take a DW out--just in case.
SHOOT
DWF Supporters
June 20, 2010
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Boy, it is hard to type an extended answer on a tablet. Back at the computer.
I agree with DWA, get at least a new nut and see if that helps.
Shoot, have you really had a barrel loosen up? I don't use any lube, other than whatever oil is leftover on the barrel from the cleaning after an outing. I almost always clean (w/o brass brushes) after every session. Maybe because of that I always have a nice tight fit when I mount the shroud. I have never "torque wrenched" the nut to see what level force I use, it is just a "turn until it locks" feel, but I would guess it couldn't be more than 10 ft-lbs, maybe less...
May 17, 2010
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I have had a barrel shoot loose, during competition. But that was after about 300 rounds straight. Nothing to it... just a few turns and I finished the shoot. Generally, I think a good practice is to check the barrel at the beginning of the shoot and again after about 100 rounds. Doing that pretty much keeps you good to go.
Soap Box, Ballot Box, Ammo Box
in that order.
4 Monson Model 15's
1 Palmer FB 15
1 Rossi 357 Model 92 (lever)
1 CZ 75B
November 23, 2008
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Good morning
Bullet weight and velocity is a factor involved with the barrel twisting out. Shoot lots of 180 grainers at max velocity and it is better to have the barrel nut snugged in tight. I ued a 10" on my 15 2 for the 81 Silly Wet season and discovered during practice the barrel would come loose after 30 rounds. There was an article written up in the Gates paper back then and the simple solution was to tighten the barrel nut beyond normal. Another aspect of the very tight barrel nut on the 10" barrel was a slight accuracy increase.
So bottom line. When I install a barrel I tighten the nut tight. When the slots look like they are getting worn I recut a new slots at 90 degrees. And always have a new nut on hand.
Mike in Peru
May 17, 2010
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Hmmm I had not considered bullet weight and velocity. I just made up 180gr cartridges myself, I shot about 70 using all EWK BA ( barrel 1:12) EH shroud, and of course a new EWK barrel nut ( I almost always buy SS nuts even for blued guns). I did not have a problem, but I could see where it could cause one.
EWK barrel nuts are not "exactly" like DW barrel nuts. The DW nuts seem to have a more shallow thread, thus they glide very smooth and easy onto the barrel. EWK nuts have a very crisp/sharp/deep thread. Thus the engagment of the threads is much more pronounced, even to the point of causing the barrel to turn in the frame. I am currently NOT using any original two slot DW barrel nuts. With the better engagment of the EWK nuts, I see very little issue.
Soap Box, Ballot Box, Ammo Box
in that order.
4 Monson Model 15's
1 Palmer FB 15
1 Rossi 357 Model 92 (lever)
1 CZ 75B
October 24, 2011
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bullet weight and speed makes sense if you think about it.. a heavy fast bullet has more rotational force than a light weight fast bullet
October 27, 2009
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I tighten all my barrels to snug and have ne'er had a problem. I would just make sure the barrel threads don't have any lube on them and use an ewk nut.
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Range Officer
Range Officers
May 2, 2009
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you'll see this same discussion about screw on silencers. Usually it is whether right hand or left handed threads are better. Same principle; bullet rotation seems to loosen them.
SHOOT
Dans Club
March 2, 2008
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I find this same thing happening with my 744, and it has never happened with any 715/15-2. I shoot only commercial ammo or commercial re-manufactured.
I went to a bookstore and asked the saleswoman "Were is the Self Help Section?" She said if she told me, it would defeat the purpose.
George Carlin
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Range Officer
Range Officers
May 2, 2009
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This is exactly why we find DW's with nuts secured with Loc-tite, jb weld, glue, plumbing putty, etc...
SHOOT
May 3, 2011
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SHOOTIST357 said:
This is exactly why we find DW's with nuts secured with Loc-tite, jb weld, glue, plumbing putty, etc...
SHOOT
You just painted a horrible picture Shoot!
OOOhhhhh! Da' Howwwaar! 
DWF Supporters
June 20, 2010
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SHOOTIST357 said:
you'll see this same discussion about screw on silencers. Usually it is whether right hand or left handed threads are better. Same principle; bullet rotation seems to loosen them.
SHOOT
Yea, I have thought about that. But with the (single-point mount) cans, you only have one end threaded when you are considering the rotational influences. For the Dans, you have the nut and frame ends, both threaded, so I keep going back and forth between the rotational forces tightening the mount or loosening it. Haven't really thought it through all the way. I have a 2 hour drive today, will ponder on it...
DWF Supporters
Dans Club
Moderators
November 17, 2008
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Don't forget heat, when the barrel heats up it grows also.
LB
Wisdom is merely the realization of how little one knows, therefore I am wise.
November 23, 2008
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Good morning
Maybe the nut heats faster or more than the barrel ? But no matter.. I snug them in and they seem to hold till I have to try and unsnug them..
Mike in Peru
March 15, 2011
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Some other non DW forums that dealt with DWs stated that some shooters (like silhouette types) would torque their barrel nuts down to a specific torque for continued accuracy (I suspect using a torque wrench with an EWK type tool hybrid). When we do casual shooting, this is something I don't think we do for our guns. However, with this new "nut loosening" phenomenon in mind, maybe it is something that might be visited. FWIW. DW41F.
September 2, 2011
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If you have a screw or nut you can't get off what do you do? Apply heat and impact!
Range Officer
Range Officers
Dans Club
February 28, 2009
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I've never had one shoot itself loose, myself. However, that's probably because I keep insurance in my range bag comprised of a DW .002 spacing gauge and 2 of Eric's barrel tools (large frame and small frame) with a complete set of pilots for each.
Works for me; it may work for you as well. 
-Mike
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