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DW trigger over travel stop
October 10, 2018
4:20 am
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3ric
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October 18, 2017
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Having previously been familiar only with Colt and S&W revolvers, I didn’t even realize my new (to me) DW 15-2 had an over travel stop adjustment on the trigger when I purchased it about a year ago. I happened to notice it during the first thorough cleaning session, but didn’t attempt to adjust it as I was happy with the accuracy and function of the revolver. Recently however, I decided to see for myself just what this adjustment could do for my DW. The stop screw was all the way in, so I gradually backed it out until it almost touched the frame when I cocked the hammer all the way back. The next trip to the range was a real eye opener as my already decent groups definitely got smaller. I now realize (after a little research) why this has always been a feature on DW revolvers, and I’m glad I took to time to figure out how to make use of it.

October 10, 2018
8:21 pm
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Ole Dog
ocala, fl

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Thank you 3ric for that knowledge.I have always left it alone in my ignorance. I will now tune my guns (that I shoot) trigger travel.

   The early small frames have the screw on the trigger. It is very difficult to adjust with the straight Allen wrenches that come with the tools. A regular wrench works better. 

   On all stainless guns and later blue guns the screw was moved to the frame. By serial number range around 365,000 all blue guns have the frame mounted screw. This is somewhere around the time the caliber became part of the serial number. Perhaps 1986. However  they intermittently had them on the frame much earlier. I have a gun in the 200,000 range with it. And I believe the model 22 started with a frame mounted screw. Of this I am not positive. That would place the earliest ones in 1979.

   The screw as installed must be adjusted from inside the frame. I think you can take the screw out and install it from the outside so you don’t have to remove the sideplate and lockwork to adjust it. 

October 16, 2018
12:48 pm
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photohause
Sebastian, FL
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Educate me please. I fully understand what is stated above, yet, I do not get how this adjustment changed your groups. What is the correlation between the Cause & the Effect?

   What new gun my Dear, this old thing?

October 16, 2018
9:59 pm
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3ric
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Trigger over travel stops are very commonly found on competition firearms; both rifles and handguns. 1911 competition pistols nearly always have them, but they are rarely found on revolvers. Dan Wesson wanted to create the most accurate revolver in the world, so he included this adjustment in his design.

Once the trigger is pulled and the sear releases the hammer there is a brief moment of delay before the hammer strikes the primer. The hammer is moving forward, and the trigger (without a stop) also continues to move rearward during this critical time in the firing cycle. The hammer movement is perfectly aligned, but our finger pulling the trigger rearward may not necessarily be so perfectly aligned. This tiny bit of trigger movement can cause our carefully aimed shot to move slightly off target before the primer is struck. By using a trigger stop we virtually eliminate rearward trigger travel once the hammer starts to fall thus taking this unnecessary movement out of the equation. Some shooters benefit from this more than others. The more “perfect” the shooter’s trigger pull is the less he may benefit from a trigger stop, but for the rest of us it can really make a big difference.

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