Wolff springs in S&W 637

[KansasPaul]

I recently purchased a Wolff spring set for my S&W 637 and I decided that today was a good time to install them. This was my first attempt at swapping out springs in a revolver, which really wasn't all that difficult. I am pretty happy with the result. The trigger in DA always felt smooth but it also felt really heavy. I replaced the trigger and hammer springs with reduced power springs - I don't own a trigger scale but my "educated" trigger finger seemed to like the change. The trigger pull in DA feels butter smooth and noticeably lighter than before. The SA trigger pull is crisp and light. Looking forward to putting a few rounds down range as soon as the weather outside clears up.

Paul

 

[skt239]

I thought about the wolf kit and even a trigger job. Almost 1000 rounds later, tons of dry firing and my 637 trigger is about perfect. I guess my procrastination paid off for once. Glad to hear the springs are working out for you.

 

[788Ham]

I can't attest to a Smith, but a new Ruger SP 101 I bought about 4 months ago had a horrid DA on it. I'd had folks tell me to just shoot it, it will smooth out. I don't normally shoot DA all the time, but it felt gritty, not smooth at all. I took it to a good smith about 10 miles from home and explained to him. Smith put in a lighter hammer spring, #14 down to a #12, won't go any lighter, polished the hammer and trigger, the lighter DA is now phenomenal ! I can now shoot DA better than SA. Hope your Smith works out for you, I know I'm a lot happier!

 

[Old Fuff]

When you go to lighter aftermarket springs there is a trade-off. In exchange for the lighter pull you reduce the "absolute reliability under ANY circumstances" that the factory springs offer, and by changing the trigger spring (rebound slide spring in a S&W) you may get trigger reset issues that can leave you with a jammed action.

You can safely presume that if lighter springs didn't compromise reliability the manufacturers would use them.

If the revolver in question is a play-toy this may not be of consequence. In a weapon it could be when you least expect it.

 

[340PD]

+1 Old Fluff. I put a spring kit in my 640. It included a extended firing pin as well as reduced power springs. The result was a very smooth light trigger pull ahat did not reset reliably every time. I called the company that sold the kit and they recommended working on the "hand" to add reliability to the reset. That made no sense to me and the last thing I wanted to do was fool with the timing of my gun. I wound up keeping the extended hammer and shipping the other parts back and we settled on a partial refund for me. They were very fair and the company offering the kit said they were not going to "drop in" all guns. I figured if this gun was designed to be a personal defense gun the additional 3# of trigger pull would not really be an issue when stacked against 100% reliability.