Replace Trigger spring on 637.

[nap637]

Got a new Airweight637 couple weeks ago, accurate, tight great little snubbie. But the trigger is hard to pull. I have a set of wolf trigger springs, 13, 14 & 15lb. and a 8lb hammer spring comming. I'm not so sure I want to replace the hammer spring , don't want light strikes and it's just fine. Any suggestion on weight of trigger spring so primer strike is not affected. Getting older so for carry I use federal 110gr low recoil HP. I have not taken off side plate yet to clean it. Any reply is appreciated. Thanks.

 

[chief38]

nap637,

I will assume you are talking about the TRIGGER RETURN SPRING here. I would not go below a 14lb weight spring on a carry gun because I want the trigger to snap back into firing position ASAP. If this were a "plinking ONLY gun" I would say to go lighter, but NOT on a carry piece. In regard to the coil main spring, I would leave that be. That (IMHO) should remain Factory on a carry piece. My .02 cents...........

Chief38

 

[Black_Sheep]

I run the stock hammer spring and a 13lb. rebound spring on a couple of my j-frames BUT both have had the rebound slide stoned and polished so the action is smooth as silk. It's my opinion that the reduced friction of the massaged rebound slide allows the trigger to reset properly with a reduced power rebound spring. YMMV...

 

[nap637]

Yes I meant rebound spring, sorry. Learning new words with this great little gun. YEARS ago when I was into owning more handguns before hard times, all of them were Smith's. I may be wrong but I sure don't remember the trigger being so strong to pull. M29, M15,2 m36's. all great guns, wish I still had them.

 

[Jebus35745]

Can the rebound spring be cut 2 coils like the K&N frame? I have one of the 642's and would also like to lighten the trigger pull on it. Larry

 

[Windageandelevation]

I just replaced the cut coil spring on a model 66, guy i bought it from didn't like the extremely light trigger that cutting the coils off caused. I am not a smith armorer. I stoned the rebound slide parallel with bevel between the bottom and back sliding surfaces. Then debured and polished the block and the correct factory rebound spring to eliminate any coil bind that may occur. This made the trigger very nice, and not dangerously light like mine was with coil cut down.

 

[armorer951]

Reference the modification of the rebound slide spring, be sure to check the single action with a reliable pull gauge after the spring change. J-frames can sometimes have an inherent light single action pull weight, and modifying the rebound spring can cause and unsafe condition by reducing the SA pull below the factory suggested minimum by replacing the OEM spring with a lower rate aftermarket one.

Wolff makes a variety of high quality springs of different weights for these revolvers, so there is no need to cut coils off of the factory installed springs.