Sp101 spring kit; which do you think?

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DennisD

New member
I got my Wolff spring kit in today. 8lb trigger return spring and 12lb, 10lb and 9lb hammer springs. Anyone gone thorough the experimentation and found which is best? I don’t want to have misfires but want the easiest pull since it is DAO. I know, I know; only I can tell what is best for me but I want your experiences as a starting point anyway :)
 
I originally bought the 9 and 11lbs main springs for mine because they were cheap and I was afraid the gun wouldn't fire with the 9lbs spring. Once installed, the 9lbs spring was night and day and the gun has yet to misfire. The pull is so much better. Haven't done anything with the return spring though. The next thing I did was smooth the trigger too, it has some rough edges and after a few DA pulls, it hurts.
 
Do those hammer springs come with a disclaimer?
Installing a lighter hammer spring may cause misfires. By installing this hammer spring, the buyer assumes all responsibility for any possible negative consequences in the event of a misfire at an inopportune moment (such as in a self-defense situation). The companies making and selling this hammer spring are not liable under any circumstances.
Click to expand...
Oh well, as long as it's just for range use I guess there's no need to worry.;)

Ok, I know I'm being a bit paranoid, but I've always wondered things like: As this spring ages, and the gun wears, does the hammer strike gradually lighten over time? I know that manufacturers do studies and experiments on their firearms and that they also have modeling tools to determine what weight spring to install for the mainspring (and other things). I wonder how much of a correction factor do they put in to compensate for the spring aging process and wear of parts in the firearm? I wonder if they add a bit of tolerance to ensure that the gun fires consistently even when a bit dirty or when a piece of lint gets stuck in the works.

Anyway, that's why I don't put lighter hammer springs in my self-defense guns.
 
I run the 10 lb hammer spring in all four of my SP-101s (.22, .38, 9x19, .357) without any signs of light-strikes.
 
Troponin, I disassembled the trigger assembly and rounded the edges as soon as I got the gun home. Thanks

JohnKSa, Yes I saw the disclaimer; that is my main concern since I will be CCW. However, I also want to be able to practice a lot and would like to be consistent. That's why I'm thinking the 12lb since it's only 2 lbs down from stock.

9X19, Apparently you shoot 9mm also. Thanks for the input.
 
Dennis, I bought the same shooter's pak you mention. I replaced the 10# trigger return spring with the included 8# Wolff spring, and replaced the 14# main spring with the 10# Wolff.

No problems at all, and I enjoy the lighter pull. This is my daily carry gun, so it has to be reliable. I am considering installing the 9# to see how it works, but I am quite satisfied with the difference this has made.
 
Thanks Doug.

2002gti; pretty simple on the SP101. If you can field strip the gun (instructions in manual) all that is left is to remove a couple of extra pins and replace. Just watch how everything comes apart and you shouldn’t have any problems. The hammer spring does take kinda strong grip to replace though since you have to pull the spring back to relieve the tension.
 
Not sure a about the trigger spring, but the main spring is a breeze. Take the grips off and right there it is. Just make sure you don't put anything in backwards. It is pretty easy o tell if it is backwards though, the hammer won't budge.

You just pull down on the spring and pull it out. The peice at the bottom will want to come out with it, that is the peice that you may accidentally put back wrong.
 
thanks dennis and trop, im gonna have to order a set from brownells. my cost is under $6.00, $10 shipped. ive only shot the piece one time but i was all over the place with it. dont know wheather it was the stout recoil but i will try to lighten the trigger and see what happens
 
It's quite a small gun and I am not the most accurate with mine either. At 10 yds I can atleast make 3 inch groups and to some of you that is terrible, but to me, that is the norm. LOL I am not always the greatest shot with my non carry weapons, I mainly shoot it because I enjoy the recoil.
 
I just finished installing the kit in my new SP101 22 lr. The 9# produced consistant misfires with two ammo brands tried. I went to the 12# and it seems to be working perfectly. Havn't tried the 10# yet. Even the 12# is a HUGE improvement over the 16.5# trigger pull the factory sent it out with.

The joy of the SP 101 is that you can take the springs to the range with you. Swapping the main is really a 2 min job in the SP.

p.s . DA accuracy is improved due to the smoother, lighter trigger.
 
The springs don't directly improve accuracy. They simply make it easier to operate the gun and keeps everything smooth. If things operate smooth and are easier, then this can translate to improved accuracy.
 
I can keep it more steady on the double action pull, that is the only thing that really equals more accuracy. The actual bullet trajectory is not going to be altered, if that's the answer you're looking for.
 
I got the SP101 kit through Wilson Combat (I have a Security Six in .357, but shop concensus was that they use the same springs). I installed the 9 lb hammer spring & it lightened the load considerably (wish I had the gonads to get into the trigger spring, but the kit arrived just a couple of days before a class & I didn't want to show up with my pistol in a shoebox). It seemed to perform real well for 200-300 rounds (nice, deep firing pin indentions in the primers), then I finally had a FTF. Upon examination, there was barely a tiny dent in the primer. My assumption is that the recoil was in part responsible for what looked like good hits.
 
I see this thread has been re-opened. Just thought I would fill everyone in. I used the 10lb hammer spring and the 8lb trigger spring (I think that was the only trigger spring supplied). I gone through 350 rounds. Works like a champ and it definitely improved my grouping. However, just for peace of mind since I will be CCW this gun; I will probably install the 12lb hammer spring. I don’t think it will make that much difference shooting (it will still be better than the 14lb OEM spring).

Fastforty, the trigger spring is really not hard to replace at all. Just watch how everything comes apart and reverse assembly.
 
Actually, if you want to cheat, you can take the trigger return spring out without disasembling the trigger any further than when it drops out. Just poke the pin out that retains the trigger housing plunger using the takedown pin provided. this will allow you to pull the plunger out the back and replace the spring from the rear ( as required) but you won't get to polish the plunger /trigger parts. still it make a big difference and only takes 60 seconds once you know where to look. ( Ps. Do eveything INSIDE a clear plastic bag so if something pops out , your all set.

Simple once you know and get over the panic :-)

http://www.smith-wessonforum.com/cgi-bin/sandwcgi/ultimatebb.cgi?ubb=get_topic;f=18;t=002530
 
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