[TargetTerror]

One of my friends has asserted that if you use a lighter mainspring but install a longer firing pin, you can have both a lighter pull and a reduced chance of light strikes. This doesn't strike me as right. Anyone have any experience with this?

[earplug]

I was getting light strikes with my 625. I changed to a Cylinder/slide brand longer firing pin and the problem is gone.
Was able to lighten up the DA pull and i'm able to use Winchester primers.
In my area WW primers are available so I use them.

[Round Gun Shooter]

There are a lot of other factors involved. Spring weights need to be balanced between the main spring and the rebound spring. Along with this is the need for smoothing mating surfaces.

A Cylinder & Slide extended pin for the new style S&W may work with lighter springs but some (not me) have had pin breakage with these.

The new factory pins (last year or so) are now titanium and smooth so they need minimum polishing with lighter springs but they still need to be polished up.

My USPSA 625 has between 5.5 & 6 # DA pull. I have done the following:

Stone work to mating surfaces in the lock work
Apex Tactical hammer
polished Cylinder & Slide extended firing pin
Spring work (lighter & Balanced)
Polished barrel of yoke for smoother DA pull
wide (.400) serrated trigger


I also did a barrel swap, but that has nothing to do with the action.

Sorry to be so long winded

Take a look

http://i37.photobucket.com/albums/e62/Round_Gun_Shooter/6inch625001.jpg
http://i37.photobucket.com/albums/e62/Round_Gun_Shooter/6inch625002.jpg