629-4 trigger pull

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Shuz

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What is the lightest trigger pull you can safely achieve with a 629-4?
I currently have a 34 ounce pull, using an 11 pound Wolff RSS, but would like to get back to a 24 to 26 ounce trigger this gun once had before sending it back to Smith to correct a "push off" condition caused by wear.
At the time I sent it back, it had an 11 Ounce Wolff RS spring and a polished rebound slide. Naturally, I replaced the 11 pound Wolff with a stock 18 pound spring before I sent it back, but, now that I have it back with a new trigger and new hammer, my 11 pound Wolff gets me to only 34 ounces!! HELP!
 
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Your previous "push off" problem was more than likely caused by changing the rebound spring, not wear. If your trigger pull gauge is correct, your current 34 oz trigger pull is already below factory spec. which is 3-3.5 lbs. The trigger pull weight you had before the repair is too low and constitutes a hazard/danger to yourself and others, IMHO.
 
Your previous trigger pull of 24 -26 ounces (1 1/2 pounds) was way to light! If you currently have a trigger pull of 2 1/8 pounds, (34 ounces) technically it is still too light and I would not go any farther to reduce it! Like the previous poster has stated, an extremely light trigger pull can also cause push-off by having too light a resistance and the sear/trigger can't hold when forward pressure is put on the hammer.

When improving a S&W trigger if I can achieve a 2 3/4 - 3 pound SMOOTH trigger I am happy with that and I know it is close to the limit of safety but will still function correctly.

chief38
 
Are you kidding ? ? ? FYI most competetive shooting venues establish a minimum of 48 ounces for the trigger pull in single action for a reason. That reason is safety. Yeah, I'm a creaky, crusty, old fart this morning but IMO if you can't shoot well with a 3 lbs. trigger you need to seriously up your game.

Historically achieving a trigger this light is accomplished by stoning an "assist angle" on the sear surface on the trigger. This has the effect of allowing the hammer to "slide downhill" on the trigger sear, which will lighten the break. However, it will also put ALL of the pressure of the sear on the tip of the sear on the hammer. As a result the hammer will develop Push Off with use. You've just spent good hard earned money having the pushoff in your model 629 fixed and what you are asking for is to recreate the conditions that caused that Push Off.

Bottomline, IMO you need to spend more of your time and energy on practicing with your gun. I'd also suggest that you install a rebound spring that will yield a 3 lbs. SA trigger in your model 29. Because in a handgun that you may be manipulating with just one hand a trigger that breaks below 3 lbs. is in my experience an AD waiting to happen.
 
I hear what you guys are saying, but I'm used to extremely light triggers and I used to shoot IHMSA with a TC that has a 12 ounce trigger! I shoot about 3 times a week here at my home range, so practice with the 10 ea .44 magnums I own, all of which have 32 ounce or less triggers, is not an issue. What I do know is that I shot my 629-4 Mtn Gun much more accurately when it had a 24 to 26 ounce trigger than I can now with a 34 ounce pull.
 
Well, Shuz, you did asked the question...
"What is the lightest trigger pull you can safely achieve with a 629-4?"

Like the others have said, 2 1/2 to 3 pounds is about the limit and still be reasonably safe.

My 629 is used for deer hunting and target use. When I got the revolver(1981) it was taken apart and everything checked to be in order and a complete action job was done at the time. The single action pull is set between 2 1/2-2 3/4 pounds.
The hammer spring wasn't modified and remained stock. The DA pull ended up being a little lighter because of the action work. You can get the hammer force to light to give a reliable ignition to the primmer this will open your groups on the target, even if the revolver never misfires.
 
1morethan8 said:
Well, Shuz, you did asked the question...
"What is the lightest trigger pull you can safely achieve with a 629-4?"

Like the others have said, 2 1/2 to 3 pounds is about the limit and still be reasonably safe.

My 629 is used for deer hunting and target use. When I got the revolver(1981) it was taken apart and everything checked to be in order and a complete action job was done at the time. The single action pull is set between 2 1/2-2 3/4 pounds.
The hammer spring wasn't modified and remained stock. The DA pull ended up being a little lighter because of the action work. You can get the hammer force to light to give a reliable ignition to the primmer this will open your groups on the target, even if the revolver never misfires.
Click to expand...

Your right! I did ask the question. I guess I'm really surprised at the answers because I had a lighter trigger pull previously and that gun was safe. Originally there was no push off. The push off developed after 15,000 or perhaps more rounds. Smith replaced both the hammer and the trigger so I'm assuming the sear angle changed or wore down somehow.

You raise a good point about ignition. In my quest for a lighter trigger I installed a Wolff reduced power mainspring, and I am now getting a misfire of about once every 50 shots or so. Perhaps I should reinstall the old standard mainspring, just to improve the ignition reliability.
 
Is there...

Do you guys know if there is anyway you can stiffen up the trigger pull in SA? I think I'm having what you guys are calling "Push Off." I can push the hammer forward while it's cocked and it'll shoot a round. Does it need to be shipped off to S&W or can I do anything myself?
 
Depends if there is damage, excessive wear, or someone has tampered with the trigger or hammer. The gun should not fire when push off ocurrs, unless your finger is on the trigger. (holding the trigger back) If the gun fires without the trigger back you have a major safety issue.

If there are no other issues, try an OEM rebound spring and see if that restores proper function. SA should be around 3-3.5 pounds.
 
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