H. K. Uriah, SASS #74619 Posted January 9, 2021 Posted January 9, 2021 I've never actually seen one of the ACP cylinders for an SAA, so I don't know if there is enough of a gap for the Autorim to be chambered in the pistols. Based on photographs I've seen, I suspect not. Assuming they won't fit for that reason, I'd guess that the Cowboy Special will fit. Can someone confirm?
Jabez Cowboy,SASS # 50129 Posted January 9, 2021 Posted January 9, 2021 Neither Cartridge Will Fit ... The .45 Cowboy Special is just a Very short .45 colt ... Jabez Cowboy
Warden Callaway Posted January 9, 2021 Posted January 9, 2021 C45S will fit in RNV 45ACP if it's loaded very tight with 451 bullets.
Colorado Coffinmaker Posted January 9, 2021 Posted January 9, 2021 Don't mean to be contrary (YES I do). No, the 45 Auto Rim won't fit a 45 ACP chambered cylinder. The "rim" of the Auto Rim is just too thick. On the other hand, the Cowboy 45 Special will run an ACP cylinder just fine. Head thickness and Case length are just right. Warden: You should have the cylinder throats look at. Ruger 45 cylinders are notorious for undersize (tight) throats.
Warden Callaway Posted January 9, 2021 Posted January 9, 2021 19 minutes ago, Colorado Coffinmaker said: Warden: You should have the cylinder throats look at. Ruger 45 cylinders are notorious for undersize (tight) throats. The guns are long gone. Last I seen of them Kid Rich was hauling them away.
Springfield Slim SASS #24733 Posted January 9, 2021 Posted January 9, 2021 I'm surprised a 45CS would work, as it has a rim also and 45acp does not.
Goody, SASS #26190 Posted January 9, 2021 Posted January 9, 2021 Why? Of the 3 the 45 ACP brass is by far the least expensive and the most widely available.
H. K. Uriah, SASS #74619 Posted January 9, 2021 Author Posted January 9, 2021 I was just curious really. I don't have an ACP SAA, but I DO have a lot of Autorim brass for use in my 1917's and Webley revolvers. {Properly downloaded for the latter] I was just wondering if there was a theoretical extra use for the cartridge. I suppose you could "shave" an ACP cylinder, but in all truth, that seems to be more trouble that it would be worth. Curiosity isn't dangerous, it allows for fun speculations.
Colorado Coffinmaker Posted January 9, 2021 Posted January 9, 2021 Hi Slim .45 ACP head spaces on the case mouth (you already knew that). C45S is head spaced by the case Rim. The chamber cut for 45ACP stands the ACP case the same height proud of the cylinder breach as the rimmed C45S. The only real difference in the dimensions of a 45 ACP cylinder and a 45 Colt Cylinder is the chamber cut. Over All, same same. There are those who feel the longer throat of an ACP Cylinder improves the accuracy of the "short" cases (C45S) as it eliminates the "jump" from case to throat. I haven't found that to be true. I am however, a proponent of the ACP Cylinder for the versatility of cartridge selection.
Warden Callaway Posted January 9, 2021 Posted January 9, 2021 Another advantage to the C45S with ACP cylinder is that the chambers are much tighter than your typical 45 Colt cylinder. Thus the brass doesn't bulge out like they often do in 45 Colt cylinder.
Jabez Cowboy,SASS # 50129 Posted January 9, 2021 Posted January 9, 2021 Unfired ( New ) 45. Cowboy Special " Star-Line " cases measure .4735 at the base ... Once fired "Star-Line " .45 ACP cases Measure .469 Before Resizing at the base ... The .45 Cowboy Special Will NOT fully seat in my .45 ACP case check gauge !!! Jabez Cowboy
Springfield Slim SASS #24733 Posted January 9, 2021 Posted January 9, 2021 So, if you sized your new 45CS brass with a 45acp die, it should work? Might have to shorten teh die a bit to remove some of the bottom flare from the die to get it to the bottom of the case.
Colorado Coffinmaker Posted January 9, 2021 Posted January 9, 2021 Well, sorry about your ACP Case Check Gauge. My result(s) come from shooting Cowboy 45 Special rounds in 6 different "sets" of guns with 45 ACP Cylinders. Some Uberti, Some USFA, Some Ruger and some Pietta. Resized with a standard Dillon 45 colt resize die. No problems at at all.
Kid Rich Posted January 9, 2021 Posted January 9, 2021 The CS runs just fine in a Ruger acp. In fact it works better than acps. Why? If you get an acp that is short it will go into the chamber to far and the primer will not be set off. The CS on the other hand is held by the rim, perfect every time. kR
DeaconKC Posted January 9, 2021 Posted January 9, 2021 Since the .455 Webley was mentioned, has anyone tried those?
Abilene, SASS # 27489 Posted January 9, 2021 Posted January 9, 2021 5 hours ago, H. K. Uriah, SASS #74619 said: I was just curious really. I don't have an ACP SAA, but I DO have a lot of Autorim brass for use in my 1917's and Webley revolvers. {Properly downloaded for the latter] I was just wondering if there was a theoretical extra use for the cartridge. I suppose you could "shave" an ACP cylinder, but in all truth, that seems to be more trouble that it would be worth. Curiosity isn't dangerous, it allows for fun speculations. Some people did just that, shaving the ACP cylinder to allow the use of Autorim brass, back before C45S was around. Why? Maybe they already had the autorim brass (or ammo) and wanted the added versatility.
H. K. Uriah, SASS #74619 Posted January 9, 2021 Author Posted January 9, 2021 30 minutes ago, Abilene, SASS # 27489 said: Some people did just that, shaving the ACP cylinder to allow the use of Autorim brass, back before C45S was around. Why? Maybe they already had the autorim brass (or ammo) and wanted the added versatility. I suppose I could get an ACP Cylinder for one of my non Colts and shave it. If I really wanted to. I think it'd be too expensive to get an actual Colt cylinder. Hmmm.... Maybe get an Armi San Marco cylinder for this one...
Warden Callaway Posted January 10, 2021 Posted January 10, 2021 38 minutes ago, H. K. Uriah, SASS #74619 said: I think it'd be too expensive to get an actual Colt cylinder. Hmmm.... A Pietta cylinder maybe be fitted to a first or second generation Colt SAA?
Springfield Slim SASS #24733 Posted January 10, 2021 Posted January 10, 2021 My Webley's take 45CS brass just fine, but they are uncut. Webley rims are a bit thinner than 45CS rims.
DeaconKC Posted January 10, 2021 Posted January 10, 2021 17 minutes ago, Springfield Slim SASS #24733 said: My Webley's take 45CS brass just fine, but they are uncut. Webley rims are a bit thinner than 45CS rims. Now you have me thinking hard. When I find my C.45S brass I'm gonna have to see if it will fit in my Triple Lock.
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