I know----so what is new about that ?
Well--I own a M22 in 45 colt---lest wise that is what it says---model 1950.
But it takes moon clips and I shoot .45acp.
There is a confusing issue here for me---maybe I am making a mountain out of a mole hill. If it is .45 colt can I shoot rimmed .45 colt ammo out of it. Now---before you laugh---I don't have any .45 rimmed cartridges to check with.
I think the .45 colt and .45 lc are the same---maybe--I don't know and have talked myownself into a tither.
Blessings

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TEXAS, by GOD

45 colt and long colt are the same.

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Jim

The model 22 is a 45 ACP and does not shoot 45 LC (Colt). It will shoot the 45 AR (auto rim) without the moon clips.

Here is a photo comparison of the .45 ACP and .45 Colt:

https://www.google.com/search?q=phot...71%3B314%3B422

They will not interchange in your gun.

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Pisgah

.45 ACP and .45 Colt are different cartridges and not interchangeable. Is your gun a 22-4?

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"I also cook."

Now Ken---that confuses me more.
I thought the AR and ACP were the same as I can use either in the Semi's.
I really did not know that I was so ignorant of all of this--- REALLY, I didn't.
Blessings

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TEXAS, by GOD

AS he said they are the same. The 45 Colt is often called a long Colt. The long is being added. The 45ACP and 45 AR are different in a couple critical areas.

Is the ejector star area cut down lower than the outer rim of the cylinder? You would need this on a 45LC cylinder for the 45ACP to headspace and clear the shield with a 45LC cylinder. If the entire rear face of the cylinder has been cut down for the full moon clips and 45ACP rounds, the headspace for 45LC would be excessive. From the front of a full moon clip to the rear of a 45acp case is about .090 while the rim of a 45LC is only .060 so there is a difference of appox .030. This is why you can't just take a 45ACP cylinder and ream it deeper to accept 45LC or take a 45 Colt cylinder and machine the complete face off to take ACPs and a clip. The firing pin would drive the 45LC forward and then when it fired the case would slam back hard into the frame. BAD BAD. Some do it but, not advised. If the center of the cylinder has been machined to accept the clips and ACP and the outer area left alone the 45LC is held back to headspace correctly by the outer rim portion. If your revolver has had the entire cylinder and ejector both cut down the cylinder would have quite a bit of rearward movement when open as the cylinder stop on a L Colt is farther forward than an ACP cylinder stop. This isn't a big deal and causes no problems with either of mine that have been fitted with 2 cylinders. A 45ACP and a LC cylinder for both my 1955 and my Brazilian.

So, if your cylinder has been replaced with a 45 ACP cylinder (you could see that that it has long throats and a short chamber or incorrectly modified you should not shot 45 Colts in it. You could not chamber 45LC in a regular ACP cylinder. You could get a new 45 Colt cylinder if this is the case. If it has a 45LC cylinder that has been correctly modified, congratulations. Convertibles are great.

The AR case is an auto rim case that has been mad especially for 45ACP revolvers. It is basically a case that has 45ACP length and an extra thick rim to make up the headspace for the clip and allow the extractor star to work.

OK NOW.
The star is recessed lower than the rest of the cylinder THAT MEANS it will take LC ???? Then what I have is half moon clips ??
This is really showing a lot of ignorance on my part.
Blessings

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TEXAS, by GOD

If you have 1/2 moon clips they would not work with a modified cylinder. 1/2 moons hold 3 rounds each and go on the outside. Full moons hold 6 and go on the inside. So if the star is about .030 lower than the outside of the cylinder the metal in a full moon will have a place to correctly space. If you have an empty full moon place it on the star and see what I mean. 1/2 moons would set on the higher outer rim of a modified cylinder and it would not close as the 45ACP case heads would not clear the cylinder.

Could you provide a clear picture of the gun and another of the rear of the cylinder??

I saw you question in the smithing portion.

45 caliber models have 2 different length cylinders. The standard 45 Colt cylinder is longer than a standard 45ACP cylinder. The barrel on a standard 45ACP model sticks farther into the frame than a LC model to make up for this shorter cylinder. The front of a stock 45ACP cylinder is about .268 from the frame and a stock 45LC is around .12.

My 45 LC cylinders were made up from model 28 357 cylinders which are the same length as a stock 45 ACP except for the headspace portion. The front of them will clear the deeper set 45ACP barrel. But, a very few real long 45LC rounds protrude from the front of the cylinder and will not work. The only ones I have actually run into is cast 255 gr Keith bullets that are crimped in the bullets crimp groove. To shot this I have to reduce powder a bit and seat the bullet deeper.

The ideal is a 45 LC revolver with a correctly modified LC cylinder or a LC cylinder and another long cylinder from say a model 29 that has been reamed to 45ACP and had the rear machined so the 45ACPs and clips will work. If your star area is deeper than the rim it is vvery poosible that you have a correctly modified long cylinder. What do you know of the guns history??

The only thing I know is that it is a M22 of the 1950 Colt, a M22-4. The full moonies sit above the star which originally indicated--to me--that it was for .45acp and it came with 2 moon clips.
The cylinder looks too short to accept colt.
Hummm-I don't know now,
Blessings

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TEXAS, by GOD

It's really not as complicated as you are making it. Your revolver is designed for .45 ACP with the moon clips, or .45 AR, which is merely a rimmed version of the ACP, without the moon clips. No way a .45 colt will work in it.

.45 AR, by the way, will NOT work in a semiauto. Won't even fit in a magazine.

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Pisgah

I don't know where you're getting .45 "Colt" from. No where on the gun does it say "Colt".

I believe the barrel on the 22-4 says ".45 Cal model of 1950", but no mention of Colt.

The 22-4 is a .45 acp.

Hope that helps.

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Watch & Pray

Well---after the brain fart subsided---I figgered it out.
I don't know how I could have come close to thinking a LC would work.
Blessings

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TEXAS, by GOD

The M22, iirc, is the new name for the 1950 descendant of the 1917 Army 45 revolver. N-frame, fixed-sight service revolver w/ 5.5" bbl. To my knowledge, that gun was chambered only for the 45 ACP with clips, or 45 Auto Rim.

I understand that some owners might have had extra cylinders made up for these guns to shoot the 45 Colt ammo, but it would be interesting to learn if S&W ever made such sylinders.

But I'm curious about the target-sighted 45s (Model 25/625), because I think these were offered in 45 Colt chambering. Also I've read that the early N-frames (Triple Lock etc), were made in 45 Colt on special order. Do any readers know how those barrels were marked as to cartridge? Did S&W just mark them as ".45" or did they actually stamp "45 Colt Ctg" on those barrels?

I think the confusion is the term 45 ACP...ACP = Automatic Colt Pistol... Therefore someone may had referred to it as 45 colt...

When I hear 45 colt..I assume 45 Long Colt

45 Automatic Colt Pistol=45ACP...
45 Auto Rim= 45 AR
45 Long Colt- 45 LC

All that said... a Model 22 in 45 Colt sure would be cool...

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Proud anachronism