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 S&W Model 25-2 45 Cal. Model 1955
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New Member

95 Posts

Posted - 11/13/2017 :  10:57:41 PM  Show Profile  Reply with Quote
Is this gun 45 ACP or 45 LC?

I have used moon clips from my 625 and they work fine, so I think it is 45 ACP, but I am wondering what you guys think.


perry shooter
Advanced Member

17389 Posts

Posted - 11/13/2017 :  11:15:46 PM  Show Profile  Reply with Quote
one way to tell is try a 45 long colt if it will chamber in the cylinder then the pistol is for that shell45 colt not 45acpthe case is very different between the two
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Advanced Member

5524 Posts

Posted - 11/13/2017 :  11:31:16 PM  Show Profile  Reply with Quote
I had a 25-5 which was my first really good pistol and it was 45 Colt. The cylinder is very thin in the bolt notch so stick to regular factory loads - it will not stand magnum loads.

All the other 25's were 45 ACP with a clip or 45 AutoRim

added You can learn something new everyday here. Yes the 125 A S&W 25-3 did come in 45 C.

Edited by - charliemeyer007 on 11/14/2017 9:29:10 PM
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Hawk Carse
Advanced Member

4142 Posts

Posted - 11/13/2017 :  11:42:44 PM  Show Profile  Reply with Quote
A M25-2 is .45 ACP/AR. Unless somebody has been messing with it.
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Laredo Lefty
Advanced Member

13493 Posts

Posted - 11/14/2017 :  02:35:26 AM  Show Profile  Reply with Quote
I have several model 25's. A couple are marked in the right side of the barrel 45 caliber model of 1955 and no specific ACP or LC marking.

An easy way to tell is open the cylinder and look down the charge holes. In the ACP cylinders there is a distinctive rim visible in the holes. The .45 Colt cylinders do not have the visible rims.

If your moon clips work then it is chambered for ACP ammo. Also, the .45 colt cylinders are visibly longer than the ACP cylinders.

"Never let school interfere with your education"
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Advanced Member

7623 Posts

Posted - 11/14/2017 :  8:10:06 PM  Show Profile  Reply with Quote
I'm a little light on details, but newer Smith revolvers in 45 ACP take different "moon clips" than the 1917s and Model 25s and earlier 625s. About 20 years ago I had a 5" lugged barrel 625 and it used the same as the 1917, 1955s. Newer 625s, 325s use a different extractor star (no pins) and a different clip.

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627 Posts

Posted - 11/14/2017 :  9:21:52 PM  Show Profile  Reply with Quote
Hi...I have a model 25-3 125th anniversary model in .45LC. I fitted a new 45ACP cylinder to it, so it now can shoot .45LC, .45ACP with moon clips, and .45AR. I distinguish the new cylinder with a stainless ejector rod. Certainly a fun piece to shoot. BT
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Advanced Member

5860 Posts

Posted - 11/15/2017 :  12:16:59 AM  Show Profile  Reply with Quote
Most likely a 45acp. They didn't produce many in Colt until the 25-3 125th anniversary model came out in 1977. Cylinder length on the acp is 1.53", and 1.67" in 45 colt. Does your serial number start with an S or an N? If it starts with an S then it should have diamonds around the grip screw if they are factory original grips. N serial numbers started in 1969. S prefixed serial numbers are more highly sought after by collectors. If it's marked "45 cal. model of 1955" then it's acp unless it has been modified. Later ones were marked ".45 Colt CTG".
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