Beating a dead horse.....questions regarding early 22 Magnum cylinders

[Coup d'etat]

Greetings everyone. I just recently purchased a Ruger Super Single-Six with a 22lr cylinder, but I did not get the 22 Magnum cylinder.
According to the serial number (#514713) the revolver was made in 1965, (second year of production?). It looks virtually unfired.
My question is when did Ruger start shipping Super Single-Six revolvers with a 22 Mag cylinder, and why is the face different?
Would a 1965 Super Single-Six even come with a 22 Mag cylinder?
There is no "star" or "house" stamped on the frame flat below the cylinder.
I've been looking on eBay and GunBroker for a 22 mag cylinder, and I know that the early ones were fluted, but the cylinder face looks different on many of the pics that I've seen on the internet.
Below are two pics to explain what I mean.
If you could direct me to a past post that I can research that would be wonderful, or perhaps you can explain on this thread.

Many thanks in advance
Coup

(Yes it does have the "Polychoke" vent rib installed but I think I'm going to leave it on)

 

[rugerguy]

the cylinder on the left is an early , firing pin groove on the breech end ( face is the other end up front) no groove in the later 22 lr cylinders and the mags NEVER had them, the mags n the beginning were NOT roll marked ,unfluted, that came with the new models later, though the first "new models " did have some older cylinder here and there,,,the difference is in the chambers, look down and "see" the ring" in a magnum cylinder ( the actual chamber) the 22 cal, there is NO ring, smooth the entire length.....early on without the cardboard shipper, the boxes are NOT marked as to "convertible" or not, it was stamped ( inked) on the outside of the shipper....so you almost need a "letter" to see just how it was shipped, yes the "star" ( asterisk) or "arrow" (house) stamp on the single cylinder guns was obvious.makes things easy to tell......
the Poly -Choker ribs were popular some years back, adds a "
nice" touch,,, easy enough to take off ,but I'd leave it , you can and will do more damage if NOT done properly........

 

[Coup d'etat]

Ahh ...I understand. I should remove the cylinder to see what I actually have in the revolver as the early 22 Mag cylinders were not marked. You also stated that the early 22 Mag cylinders were unfluted?
So the correct question I should ask is this: on an early Super Single-Six, what would a "proper" 22 Mag cylinder look like?
1) No roll mark.
2) No firing pin groove.
3) Unfluted?
Many thanks

 

[hittman]

early Super Single-Six, what would a "proper" 22 Mag cylinder look like?

Just like the LR cylinder

 

[rugerguy]

you got it ,,,,No. 1, 2 and 3...and as for a spare just make sure you measure the overalll length of the one that is NOW in your gun, too long ago can adjust if you get one too "short" problem time, headspace, misfires and on and on....and NO I do NOT believe in "shims"..........there is a proper way to make things 'kosher'.........
remember the main thing on old model 22 calibers, the magnums did NOT appear till 1959 and the serial numbers for the 22's had to be OVER #150,000,,,the Magnum marked guns started at serial number #300,000 (1959)...easy enough to remember

 

[chet15]

All regular production old model Super Single-Sixes were shipped as convertibles by default.
The "C" in the catalog number SC5 and SC6 is the abbreviation for "convertible".
There are exceptions, like the Super Single-Sixes that were chrome plated (a few were shipped out as LR only) and a few factory "seconds" that also left the factory as LR only because they had deep purple colored cylinder frames (and were supposed to have been plated, but ruger gave up on the plating project, so shipped the guns out as cheaply as possible by sending them out with only the LR cylinder, after marking them with an "S" for "second").
Chet15