Just wondering if anyone has swapped a Wolff spring out and what poundage you used for the hammer spring? I know the 10 lb. is reliable in my .357 SP101, but have not tried it in the new .22.
http://rugerforum.net/ruger-rimfires/41608-sp101-22lr-spring-info.htmlJust wondering if anyone has swapped a Wolff spring out and what poundage you used for the hammer spring? I know the 10 lb. is reliable in my .357 SP101, but have not tried it in the new .22.
My SP101-22 was test fired July 16th 2012. I used the Wolff spring kit in mine, but even with the 12# spring, was getting unsatisfactory results. I installed the 8# trigger return spring, and went back to the rimfire mainspring. The DA pull IS better, and reliability is 100%. I have a notion that Wolff put that disclaimer on the package because the srings are unreliable with the rimfire version, not because of some mystical design change that wont allow the use of these springs.Mine was a 2011 model and I got away with it. Apparently, not all SP101 22 LR owners have been as lucky.
Hate to think I no longer have the option of a spring kit on these otherwise neat revolvers.
Been there, tried that. Didnt work for me. What does work, and is acceptable is what I posted. Stock rimfire mainspring, and 8# trigger return spring. The trigger is long, but very predictable, stages nicely and the reliability is 100%. With a centerfire SP101 mainspring, the reliability was around 80% in DA.I think if one searches the forum there was a discussion sometime back where someone with a .22 rimfire mentioned the mainspring was definitely heavier than the .357 version so it may turn out using the "stock" 14 lb mainspring could lower the DA pull on the .22LR without the misfires from the 12 lb spring.
They changed the design of the hammer to reduce the hammer mass.Huh? Wonder what happened?
That is interesting you say that about the hammers.. My new SP101 .22 has a MIM trigger, and a Cast? Stainless hammer. I have seen pictures on GB, where the SP101 has a MIM Hammer as well as a MIM trigger. You can tell by the line down the middle of the hammer. My hammer does not have the line?? .... So I am guessing Ruger wanted the hammer to have more mass?.........They changed the design of the hammer to reduce the hammer mass.
The SP101 hammer actually has a few redesigns over time. If you take a few apart, there are other minor differences, and differences between RF/CF models.
I never operated on a .327, but I'd bet there are some differences there also, as it uses a Small Rifle primer due to increased operating pressures.
Yep, and if you drop them on a digital scale, it's apparent that was the design plan. I have three SP101's in the safe. An early .38 Special I found in a used gun display (<$200 at the time, nearly new), My 4", and my daughters .22LR. The parts are all similar, but not identical.That is interesting you say that about the hammers.. My new SP101 .22 has a MIM trigger, and a Cast? Stainless hammer. . So I am guessing Ruger wanted the hammer to have more mass?.
But is the 22 spring more pounds than the 357? That is the million dollar question.