Sort of an apples to oranges comparison. The K frame is a medium frame revolver with a 1.446" diameter cylinder and larger frame dimensions.Can anybody here provide the height and length dimensions? Could a K-frame cylinder fit in an SP101 frame?
Thank you for providing a somewhat informative to my question. So, if you had an apple and an orange, and I asked you to measure the circumference and weight of each, would that be an "apples to oranges comparison"?Sort of an apples to oranges comparison. The K frame is a medium frame revolver with a 1.446" diameter cylinder and larger frame dimensions.
The SP101 is a D frame sized revolver (Small frame Colt) just with a 1.35" diameter cylinder, instead of the typical D frame 1.40" diameter cylinder.
The SP101 is 4.5 inches high and the K frame is a little closer to 5 inches in height.
A four inch SP101 is around 9 inches long and a 4 inch K frame is about 9.8 inches long.
A four inch SP101 weighs 29 ounces and a 4 inch model 66 weighs 37 ounces.
I just pulled this info off of Gunblast and the S&W site.
Ruger made a mistake by going with an abbreviated frame height and a 5 shot 1.35" diameter cylinder instead of a true D frame sized, six shot 1.40" diameter cylinder. The Ruger is otherwise nearly identical in dimensions with other D frame sized revolvers. Most holster makers even market D frame holsters for the SP101. With the Taurus 856, Charter Police Undercover, Kimber K6s, Colt Cobra, and Colt King Cobra on the market, Ruger needs to offer a six shot .38/.357 SP101. A second frame revision (first was to allow longer than 125 grain bullets in .357) would definitely be worth the investment costs.
cranky, go back to bed. I only asked if a K-frame cylinder could fit in an SP101 frame. That's all. Not install and function. Not installing a small block Chevrolet engine in a Ford. And yes, a six-shot revolver based on the SP101 frame is my thought. I don't have a K-frame nor an SP101 easily available to me, so that's why I asked the simple question here.can you shove a small block chevy in a ford? Yes, but with modifications. In the case of the chevy in a ford it may be an improvement, but why put a K frame cylinder in a Ruger? for 6 shots? The timing would be off, the advance pawls are different, star on the back of the cylinder is different... the size is not the only issue
In hindsight, I should not have used the phrase "an apples to oranges comparison." I apologize for that.Thank you for providing a somewhat informative to my question. So, if you had an apple and an orange, and I asked you to measure the circumference and weight of each, would that be an "apples to oranges comparison"?
I like the S&W K-frame six-shot .38 Special revolvers (Model 10, Model 15), and I was wondering how easy would it be for Ruger to produce a six-shot ..38 Special with the existing SP101.
I don't quite understand how it would be thought of as goofy, unless there were a lot of assumptions on the part of the person reading it. I thought it was a simple question, just asking for frame window dimensions and if a K-frame cylinder would even fit in an SP101 frame. Nowhere did I state that I was looking to build an SP101 with a K-frame cylinder. In a recent thread about "what new Ruger DA revolver would you like to see"?, I posted that a six-shot .38 Special, in the image of the S&W Model 15 would be nice. After that, I was wondering how just how difficult would it be for Ruger to do that with mainly existing components.Yes.
.... totally different crane, cylinder latch, ratchet column, frame-to-bore spacing, etc.Could a K-frame cylinder fit in an SP101 frame?
It will certainly require a new frame. There is no getting around that. The SP101 is identical to other D frame size revolvers, with two exceptions. The height of the frame is just a hair shorter and the gun uses a 1.35" diameter cylinder instead of a 1.40" diameter cylinder (like on other D frame sized revolvers). The SP101 is otherwise in the D frame size class in terms of weight, length, and holster fitment. Ruger has changed to SP101 frame once before to allow for heavier bullets in .357.firescout , JWintergreen
This is not a new thought . It is a perennial concept whenever there is a "wish list" thread.
There's more to engineering a long lasting revolver than cylinder size and the measurements can't be just jiggled about . Unfortunately something in the geometry makes a 6 round .357 not fit in the SP-101.
Maybe it's the cyl. axis to bore as mentioned , maybe it requires that the cocking notch to not be centered over the chamber so odd numbers are used.
Who knows ? Not me but Ruger does.
If it was doable Ruger would have done it long ago. If it was doable the high dollar pistol smiths would have tackled it . None ever have .If it could be done Lipsey's would have already ordered a couple of thousand , because the would sell.
With a slightly smaller diameter bullet they make it work with the 327 . This tells me they have to parts to time a 6 shot SP-101 and if they have not reworked the 357 yet it can't be done without redesigning the frame.
And when they have the workhorse GP that's not gonna happen.
I respectfully disagree. Ruger should not rest on their laurels.Well I see your point but not so sure as to it being an elephant in the room . Or even of interest to most SP owners and certainly not me.
The Sp-101 is a HUGELY successful platform as is. Many many are satisfied with it, as is . They sell as many as they can make . As a small frame it is well suited for .357 sized and down calibers and THAT is it's design parameters.
I hear more complaints about weight than I do about shot capacity . As a whole SP owners are content with 5 for a pocket class gun . S&W set that bar a long time ago. It barely fits as a pocket class gun now due to weight now and any increase would not play well.
Recently they did cast a new frame for the SP with provisions for the ADJ. sights. If there was any thought of up sizing the frame that would have been the time to do it.
The simple frame change you suggest would require MILLIONS in expenses . New casting molds . New machining jigs. A whole round of safety and function testing all at the expense of a very successful existing product . All to add 1 more round ? Plus it might alienate many of the existing customers that like it just the way it is.
My thoughts , if you need six shots , get a bigger /different gun. You want D frame ,get a Colt ,,,,,,, but they really don's sell as well as an SP-101.
I agree, this has already been covered. If one wants a medium sized K frame esque Ruger, you should just hunt down a Six Series gun.Yes, a S&W cylinder will slip right-into a Ruger Frame, (and vice-versa) and it will work perfectly without any modifications to the cylinder.
However, a single simple modification that requires no special skills or tools is required first.
Here it is:
Exchange the Ruger frame and internals with a S&W frame and internals.