Ruger GP 100 Spring Kit installation

Ben

Moderator
Staff member
I ordered a Wolff spring kit for my Ruger GP 100 , 357 Mag. revolver.
Today was the day to make the installation.
I changed out the main spring from the factory 14 lb. main spring to the Wolff 9 lb. main spring.
( I have a Wolf 10 lb, and 12 lb. mainspring in reserve in case I have problems with misfires )

All the critical areas got a 1,000 grit mirror polish.
All the work is now completed.
I now have a 2.25 lb. single action trigger pull and a silky smooth double action pull.

A1zU7RW.jpg


In order to polish the part you see below, you must tap out the pin that holds it in place. Then the part is easily polished, re lubricated and put back in place.
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I also changed out the trigger return spring.
That made a huge difference in the trigger pull.

ViyeuM5.jpg


All work is completed and revolver is now re assembled.

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Creeker

Well-Known Member
Thanks for the tip & pictures. Don't own one of these but who knows what the future may hold.
 

JonB

Halcyon member
an excellent and simple tutorial with photos. Thanks.
I have been thinking about doing this on my GP-100.
 

Ben

Moderator
Staff member
You tube will get you through it.
I watched several YouTubes before attempting the installation.
No problems here.

Ben
 

dannyd93140

New Member
Sometimes you will have trouble with the 9 pound spring not firing CCI primers. I have 5 GP's and 2 sp101. Got the first GP in 1989.
 

Pistolero

Well-Known Member
Mine would not pop all primers with middle hammer spring, needed the heaviest in
the kit, which is still lighter than stock.

Bill
 

Cherokee

Medina, Ohio
To me, the hardest part of the process was getting the trigger group and hammer out of the frame...a real chore on the one I had. Getting it back into the frame wasn't easy either.
 

Pistolero

Well-Known Member
Sometimes it is helpful to polish the rear trigger group plunger and smooth it up,
and also the edges around the frame latching point so that it can move in and
out more smoothly.

Bill