A Ruger SP is likely in my future. I learned of a series of books called IBOK’s ( Iowegan’s Books of Knowledge). They used to be available for. I bought a new SP a few days ago, did the IBOK action smoothing, and then decided to try giving it a mirror polish. I have a lot of experience. Post subject: SP mods. Post . He re-did the IBOK, removed the offending schematic and added LOTS more pics and now he charges for it.

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They have a greater selection of sights than about anyone. As the trigger is pulled 1. Often the factory leaves the back surface the flat area around the trigger guard latch hole longer than it should be. This becomes very important when light hammer springs are used.

The SP101 Club

This is evidenced by measuring the SA trigger pull 10 times and getting different pull weights. They are great revolvers that will last a lifetime. Clean the bore and forcing cone thoroughly before inspecting. Insert the trigger guard in the frame.

Replace the hammer dog spring and plunger. To test, cock the hammer and apply considerable forward pressure to the top of the hammer. Once the left panel is pushed out, a small disassembly pin part 9 will drop out.

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Apply a ibpk of oil to the trigger pivot pin and trigger plunger. Be careful with this step because if you slip off, the spring and seat will launch under considerable force.

Remove the grip screw.

Ease the sight up to release spring tension. Energy is derived from velocity squared times mass. There will be two springs part 36 under the sight.

Reduced spring kit and Hogue grips Ruger GP Due to copyright issues the schematic had to be removed.

Ruger SP Modifications

When GPs are used for competition, speed loaders ubok also be used. Post Deleted by Checker4Tix. The dimensions are different of course but essentially they are the same revolver. Use a trigger pull test scale to measure SA and DA trigger pull weight. Grab the strut assembly and pull it out of the gun. Do not sand the forcing cone, cylinder face, cylinder notches, cylinder crane or the frame where it meets the crane or any other surface unless you’re sure it will not effect the proper function of the revolver.

Check vertical alignment by s;101 sure ep101 barrel rib is aligned with the front top strap. GPs with fixed sights are equipped with compact rubber grips with inserts.

ShacklefordGoldy49 and 6 others like this. Best front sight ever made for a SP, day or night.

Wolff Springs for Ruger SP [Archive] –

I am curious if the newer models are made differently from the old ones. The HKS speedloaders have a knob to turn to release the bullets into the cylinder. I tell you what he is a real gentleman and very knowledgeable as you can tell from his article. Cylinder latch engages the ps101 notch. Minor rough spots are not an issue.


I inspected the primers before each reload. Apply a drop of oil in the hole. There are some good videos on you tube on taking te sp all the way down. Hold the latch in with your left thumb against spring tension while inserting the latch-retaining pin part 20 in the hole with your right hand. Installing hammer shims also improves this technique. Use the same formula as with the trigger.

An excessively premature carry-up can cause a trigger pull gag near the end of the trigger stroke. I switched the trigger return spring to the Wolff reduced power spring to try that as well. When the hammer strikes the transfer bar and in turn the transfer bar strikes the firing pin, the firing pin s101 be driven considerably farther than one would think.