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"More" Old model single six questions...

This is a discussion on "More" Old model single six questions... within the Ruger Single Action forums, part of the Pistol & Revolver Forum category; I have come across a Single Six, with serial # prefix 515xxx. Cylinder #s match the last three digits of # on frame. Cylinder is ...


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Old March 1st, 2020, 11:59 AM   #1
 
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"More" Old model single six questions...

I have come across a Single Six, with serial # prefix 515xxx. Cylinder #s match the last three digits of # on frame. Cylinder is fluted but appears to be .22 mag? From what I've learned while lurking here, the serial # refers to a .22 mag. only pistol? Mag. nor Magnum isn"t anywhere on the frame. Anyone have a guess?



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Old March 1st, 2020, 01:15 PM   #2
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They did make fluted .22 mag cylinders for a while. If a .22 mag cartridge fits, it's a .22 mag.

The shank of a 7/32 drill bit will fit in a .22 mag barrel, but not in a .22 lr only barrel. Make sure the drill bit is not scraped up by the drill chuck.

I thought those that were shipped initially as a .22 mag said so on the frame, later they just say .22 cal. I just check the bore for myself.

If you are still concerned, you can check with Ruger to see how it was shipped from the factory.
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Old March 1st, 2020, 01:38 PM   #3
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All Single-Sixes up to S/N 150,000 (no prefix) have a .222" bore and were shipped only with a 22 LR cylinder. After S/N 150,000 and all Single-Sixes with a serial number prefix, will have .224" bores and may have a 22 LR cylinder, a 22 Mag cylinder, or both. Single-Six Magnum models have "WIN .22 RF Mag CAL" on the left side of the frame. 22 LR only and 22 Convertibles just have .22 CAL. A prefixed S/N would look like this: 20-12345.

Ruger has made quite a few variations in cylinders so Frontiersman's procedure is the best when it come to positively determining what a cylinder is chambered for. A 22 Mag cartridge will not fit in a 22 LR cylinder so that's the most positive test.

Last edited by Iowegan; March 1st, 2020 at 01:43 PM.
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Old March 1st, 2020, 01:42 PM   #4
 
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Quote:
Originally Posted by Frontiersman View Post
They did make fluted .22 mag cylinders for a while. If a .22 mag cartridge fits, it's a .22 mag.

The shank of a 7/32 drill bit will fit in a .22 mag barrel, but not in a .22 lr only barrel. Make sure the drill bit is not scraped up by the drill chuck.

I thought those that were shipped initially as a .22 mag said so on the frame, later they just say .22 cal. I just check the bore for myself.

If you are still concerned, you can check with Ruger to see how it was shipped from the factory.
Not to highjack, but does anyone know how long it takes Ruger to return an answer to an info request ? Thanks.
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Old March 1st, 2020, 02:04 PM   #5
 
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Quote:
Originally Posted by Iowegan View Post
All Single-Sixes up to S/N 150,000 (no prefix) have a .222" bore and were shipped only with a 22 LR cylinder. After S/N 150,000 and all Single-Sixes with a serial number prefix, will have .224" bores and may have a 22 LR cylinder, a 22 Mag cylinder, or both. Single-Six Magnum models have "WIN .22 RF Mag CAL" on the left side of the frame. 22 LR only and 22 Convertibles just have .22 CAL. A prefixed S/N would look like this: 20-12345.

Ruger has made quite a few variations in cylinders so Frontiersman's procedure is the best when it come to positively determining what a cylinder is chambered for. A 22 Mag cartridge will not fit in a 22 LR cylinder so that's the most positive test.
I think I read in an older post of yours, that the 515 prefix was affixed to models that were "Magnum Only"? Also, I'm missing the base/cylinder pin. Took it to a local gun show last week, no luck. To another gun shop today, same result. Will the MN base pin not fit OS guns?

When I got this pistol, both .22 mag. and .22lr were in the cylinder. Just curious as to the origins.
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Old March 1st, 2020, 02:05 PM   #6
 
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Sorry...NM, not MN...
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Old March 1st, 2020, 02:24 PM   #7
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Mixed Nutz, You have me confused????? A prefix is a number before a dash and the rest of the serial number as I noted in my above post (example: 20-12345 where 20 is the prefix). There's no such thing as a Single-Six with a 515 prefix, however there are serial numbers without a prefix that start with 515. If that's what you have, it is well below the 150,000 threshold for 22 Mags so it is a 22 LR only.

Yes, a New Model (not MN) base pin will work just fine in an Old Model Single-Six (not OS). If you can't find one locally, you can order one from Brownell's. Part # 780-022-011, 8 bucks.
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Old March 1st, 2020, 04:07 PM   #8
 
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I'm not trying to confuse anyone, more than I am. LOL...
Thanks for your advise!!

Been lurking here for a while, and you seem to be the "go to guy".

515288. What can you tell me about it?

I don't mind spending ten bucks for Ruger's synopsis, but you seem to have a more clear insight, if that's possible...
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Old March 1st, 2020, 05:46 PM   #9
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Does it have adjustable sights?

Super Single Six 1965
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Old March 1st, 2020, 07:25 PM   #10
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Frontiersman, You nailed it. All "Supers" had adjustable sights. Most were convertibles but some were made in 22 Mag only. Depending on barrel length, the catalog number is SC4 (4 5/8" barrel), SC5 (5 1/2" barrel), SC6 (6 1/2" barrel) or SCM 6 1/2" Magnum only.

Here's my SC6 (1966 vintage, S/N 525524) just a little newer than the OP's:

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Old March 1st, 2020, 08:43 PM   #11
 
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Mixed Nutz,
Howdy from over in Anderson. If you haven't contacted Lee Shealy (L S Gun Shop) there in Fountain Inn give him a call. He has a ton of parts and is a great guy to deal with.If Lee can't help try Jack First Gunshop in Rapid City, SD. Gunbroker and Ebay are also possible sources. It won't be original but I think Kellye at beltmountain.com makes a pin also.

Best Regards,
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Old March 2nd, 2020, 03:12 AM   #12
 
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6 1/2" barrel length. Where do I find the model #?

Howdy, back at ya'. ADP3. I talked to Lee, at the gun show last week. He tried a new model base pin in my pistol, but said it wasn't a correct fit, hence some of my confusion?

Did the SCM 6 1/2 have a different base pin?
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Old March 2nd, 2020, 01:46 PM   #13
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That is pretty. Is it just me, or do the old models have a deeper black finish?

For some reason I am drawn to the 3 screws.

But I do like them all.
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Old March 8th, 2020, 07:16 AM   #14
 
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Thanks for all of the feedback, guys!! After reading the "OM trade in post", I'm even more confused though. Nitro Acres, posted about the Super Single Six's, with a 6 1/2" barrel, being a mistake of sorts? Where do I find the model for this pistol? And, as I posted above, did the Supers have a different cylinder pin? Not wanting to be redundant, just searching for a bit more info.
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Old March 8th, 2020, 07:56 AM   #15
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Mixed Nutz, I see where your screen name came from ….the OM trade thread in is about a Blackhawk, not a Single-Six. The model numbers for Single-Sixes like your are in my post #10. All new and old model Single-Sixes have the same diameter and same length base pin. New model base pins have a spring loaded plunger in the rear end but will work just fine in an Old Model Single-Six.
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