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New SP101 .327 Federal, tapered cylinder?

This is a discussion on New SP101 .327 Federal, tapered cylinder? within the Ruger Double Action forums, part of the Pistol & Revolver Forum category; I just joined the ranks of the 4.2" bbl SP101 .327 Federal owners. The last SP101 that I bought was way back in 2002, it ...


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Old May 17th, 2017, 01:05 AM   #1
 
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New SP101 .327 Federal, tapered cylinder?

I just joined the ranks of the 4.2" bbl SP101 .327 Federal owners.

The last SP101 that I bought was way back in 2002, it was the 3" .32 H&R Mag which I really like. I contemplated having the cylinder reamed out to .327 FM, but decided instead to keep it original since they aren't making them anymore and buy another SP101 and get adjustable sight in the process.

Wow... what a difference in workmanship since 2002, like S&W, Ruger isn't making them like they used to.

Which brings me to my question, I didn't notice it while inspecting it at the LGS, but after I got it home I thought that the cylinder looked kind of "odd" and realized that it has a noticeable taper/slope at the front, which also makes the flutes look kind of oblong.

Broke out my digital calipers, the rear of it measures 1.350" and tapers down to 1.319" at the cylinder face, my 2002 SP101 measures a straight 1.349" front to back.

Design improvement or is the machining off?

I'll be taking it out to the range this weekend to see how it shoots.
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Old May 17th, 2017, 02:30 AM   #2
 
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I just bought the same thing, and mine is just like yours .... the cylinder has the same taper. Looks odd but shoots great, so I decided I could get over it.

Not real happy with the rear sight though ... it wobbles side to side in the channel, and the spring holding elevation is weak and mushy. How is yours?

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Old May 17th, 2017, 02:59 AM   #3
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The tapered cylinder has become the standard cylinder profile it would seem. They first appeared on the GP100 Wiley Clapp models and then later the SP101 Wiley Clapp. Then folks started reporting them showing up on standard SP101s and now it seems to be standard on all SP101s. I don't recall Ruger ever made any mention of it anyplace but then that's generally how they do things. Design changes just happen and you'll still find inconsistencies as old parts are used up.

I think the tapered cylinder is meant to be easier to holster but I don't know how much that really matters. Some folks like the tapered look, others don't. Shouldn't affect function.
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Old May 17th, 2017, 03:41 AM   #4
 
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I like the "custom" look of the tapered cylinder
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Old May 17th, 2017, 03:46 AM   #5
 
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Quote:
Originally Posted by Gunhacker View Post
I just joined the ranks of the 4.2" bbl SP101 .327 Federal owners.

The last SP101 that I bought was way back in 2002, it was the 3" .32 H&R Mag which I really like. I contemplated having the cylinder reamed out to .327 FM, but decided instead to keep it original since they aren't making them anymore and buy another SP101 and get adjustable sight in the process.

Wow... what a difference in workmanship since 2002, like S&W, Ruger isn't making them like they used to.

Which brings me to my question, I didn't notice it while inspecting it at the LGS, but after I got it home I thought that the cylinder looked kind of "odd" and realized that it has a noticeable taper/slope at the front, which also makes the flutes look kind of oblong.

Broke out my digital calipers, the rear of it measures 1.350" and tapers down to 1.319" at the cylinder face, my 2002 SP101 measures a straight 1.349" front to back.

Design improvement or is the machining off?

I'll be taking it out to the range this weekend to see how it shoots.
I have that gun, and mine is not like the picture. I would be unwilling to fire yours, since that taper would make the throat wall very thin. It might also spit at you with little shielding by the cylinder face. My cylinder is chamfered, and that seems enough for handling and holstering. Serial # 575-81xxx.

Last edited by at liberty; May 17th, 2017 at 03:51 AM.
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Old May 17th, 2017, 07:44 AM   #6
 
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It's supposed to make holstering easier. I don't like it aesthetically but it doesn't hurt performance or function of the gun.

I do agree with you the fit and finish of the newer guns leaves much to be desired. I will not even buy new, I much prefer buying older guns on the used market.
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Old May 17th, 2017, 08:38 AM   #7
 
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I have the SP-101, about a year and a half. SN 576-03xxx, have 218 327 fed. mag. rds thru it along with some 32 h&r but mostly 32 swl. How I know only 218 rds. of 327 thru it is the front sight fell off at that count. Love shooting it, and debating now to try to locktite front sight on or send back to Ruger. Probably will send back. The rear sight on mine also moves side to side a bit but never affected accuracy. Luckily Ruger CS is still good. My cylinder does not seem to be as tapered as yours from the picture. Digital calipers showed about 1.361 rear and front.
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Old May 17th, 2017, 08:43 AM   #8
 
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The taper is intentional and not a milling error. Cylinder is taper supposedly to improve holstering. My SP101 WC edition has the same cylinder profile.
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Old May 17th, 2017, 12:06 PM   #9
 
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My SP101 .327FM is a 3 inch just like the .32H&R SP101's mine made in 2008 low round count. Mine was owned by a elderly lady. This gun was stored in a chest of drawers with clothes. The son found this gun unfired NIB when I found it listed online. My rear sight is windage only but I like it.
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Old May 17th, 2017, 12:25 PM   #10
 
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I bought a 4.2 last year NIB. It looked like someone finished it with a GRINDER.

But that was the only defect I could find. The machine work was ok. All in all, its a nice accurate revolver with a pretty decent trigger,, which got alot better with use..

The only problem I find with the 327 Fm is the sonic crack is ear drum busting, so using it in an SD situation would have EVERYONE deaf, and probably also flash blind.

I wouldnt carry it for an EDC for those two reasons. But the Blackhawk 327 is the most accurate hunting revolver Ive ever owned. Awesome for hunting if you got time to put ear protection on.
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Old May 17th, 2017, 02:22 PM   #11
 
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They can keep the tapered cylinder. For me that's a deal breaker
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Old May 17th, 2017, 02:33 PM   #12
 
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Doubt Ruger would make an unsafe cyclinder(hopefully). In looking at mine I wouldn't mind the tapered cylinder. For each his own. I called Ruger today on the front sight that fell off and they are sending me a new fiber optic sight. Figured would give a try and if it is the sight that is defective ok but if not then have two front fiber optic sights in reserve??
Waiting for Gunhackers range report.
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Old May 17th, 2017, 02:59 PM   #13
 
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Thanks all for the replies... since mine is not unique, I can live with it... heck, I'm putting up with worse from the last few S&W's I bought in the past 2 years. Such as my S&W 625-8 JM... it has a "clocked" barrel from being over tightened, so the factory front sight blade was canted to the left and looking like the leaning tower of Pisa in the rear sight notch.

After taking it to the range, I discovered that it is a tack driver and decided it's a keeper.

I also found that I didn't care for the factory front sight blade so I bought a Hi-Viz, and when I installed it I discovered that it had an issue... it was leaning to the right. But that "counter lean" has compensated for the barrel clocking and I now have a nice aligned sight picture, with the front blade parallel with the the rear sight notch (the camera is making the front blade look smaller in the rear sight notch than what it really is).

A proverbial 2 wrongs makes a right.

And yes... that muzzle crown is as rough as it looks, another wart I'll need to fix.
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File Type: jpg 625 clocked barrel.jpg (121.4 KB, 26 views)
File Type: jpg Leaning Hi-Viz.jpg (171.8 KB, 32 views)
File Type: jpg Better now.jpg (127.1 KB, 27 views)

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Old May 17th, 2017, 03:08 PM   #14
 
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Quote:
Originally Posted by msauter View Post
I just bought the same thing, and mine is just like yours .... the cylinder has the same taper. Looks odd but shoots great, so I decided I could get over it.

Not real happy with the rear sight though ... it wobbles side to side in the channel, and the spring holding elevation is weak and mushy. How is yours?

My rear sight does not have any side to side movement, but the spring tension on the elevation screw is anemic like yours.

If you put some upward pressure on the rear sight and try turning the elevation screw to lower the sight... you can feel that the detent notches are coarsely cut and takes more effort to turn the screw. By using a milder tension spring like that, it makes it feel much smoother and easier to turn... I'd rather have a stiffer spring.
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Old May 17th, 2017, 03:42 PM   #15
 
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Ruger needs to do better finish work on their guns!!!
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