Perplexed S&W guys!

[Koolbreez]

So recently got this Smith & Wesson double action 45, has British proof marks and I think it was a Royal Canadian Mountie pistol.
When I bought it and looked it over, I was fairly assure that it was a 45 ACP, but When I loaded it, the 45 ACP fell into the cylinder about an eighth of an inch. So then I figured it was probably a 45 Long Colt, wrong again it won’t fit but about 1/2 the bullet,

Question is, does this gun require moon clips in order for the 45 ACP to work because the extractor obviously with the 45acp
into the cylinder casing and all it won’t extract.

What in the world do I have here?

 

[4ssss]

Maybe .455?

The .455 Colt New Service and the RCMP - Guns and Ammo

When I was a kid back in the 1940s and '50s, there was a great program — first on radio

www.gunsandammo.com

Smith & Wesson RCMP Revolver 1950

www.joesalter.ca

 

[GeauxLSU]

Google machine suggest the model 547 (9mm) is the only one that does NOT require moon clips.

 

[buellbrewer]

my Brazilian contract 1917 (i believe its the 1st run) uses moon clips with acp or else 45 auto rims. sadly, when I got it someone had changes out the grips.

 

[charlie hotel lima]

It's more than likely .45 acp, moon clips. That's what the 1917 was built to use, for the military. Also, looks like it has checkered stocks, so, probably commercial guns bought by the Canadians. Even nicer to have, IMO.

 

[Koolbreez]

It's more than likely .45 acp, moon clips. That's what the 1917 was built to use, for the military. Also, looks like it has checkered stocks, so, probably commercial guns bought by the Canadians. Even nicer to have, IMO.

So do you believe that 45acp with moon clips would work?

 

[Koolbreez]

455 Welby is out there to buy $1.00 - $1.25 a round.

 

[Koolbreez]

Wouldn’t the gun say 455 if that was the ammo needed? This just says DA 45?

 

[charlie hotel lima]

PM'd you.

 

[GeauxLSU]

What markings are on frame under the grips?