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Old 10-13-2010, 06:08 PM
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.45 AutoRim ammo in a Hartford 1892 .45 Colt carbine?

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Will 45 AutoRim ammo work in a Hartford 1892 .45 Colt carbine? Thanks
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Old 10-13-2010, 07:24 PM
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I wouldn't count on it. The Auto Rim's rim (.516") is 0.004" wider than the .45 Colt (.512"). You may find .45 Auto rim brass manufactured small enough that it still fits, but then you still have the fact the case body of the Auto Rim is smaller than that of the .45 Colt. The .45 Colt case body is 0.480" wide, maximum, front to back. The Auto Rim is slightly tapered, being 0.476' maximum at the base and 0.472" maximum at the mouth. So this is potential for a pretty loose and poorly aligned fit in the .45 Colt chamber.

Even if you got rims small enough and the brass to fit the chambers, it stands a good chance of cause a lot of leading in the gun. That's because the shorter case may let the bullet lie at an angle in the cylinder (always bad for accuracy) and have gas bypassing the base until the bullet makes it to the throat.

Anyway, what you're asking about sounds a little like putting a 6-32 screw into an 8-32 tapped hole. Good fit won't be part of the picture.
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Old 10-13-2010, 08:01 PM
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The AR rim is considerably thicker, too. Doubtful you could ever close the bolt.

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Old 10-15-2010, 03:08 PM
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Theres a short case out there called a cowboy special or something like that. Do a search. It might work. Theres also the 45 Schofield.
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Old 10-19-2010, 06:39 AM
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Originally Posted by laocmo View Post
Will 45 AutoRim ammo work in a Hartford 1892 .45 Colt carbine? Thanks

Unless you just happen to have a bucket full of the Auto Rim brass , why would you want to ? And even if you did , I suspect you could do some trading ( or sell it ) to come up with .45 LC brass ?

Bought new , I suspect .45 LC is cheaper , any way .

Is this one of those deals where you have a wheel gun that shoots the Auto Rim ammo ?

God bless
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Old 10-25-2010, 06:56 PM
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Originally Posted by ironhead7544 View Post
Theres a short case out there called a cowboy special or something like that. Do a search. It might work. Theres also the 45 Schofield.
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Old 12-16-2016, 04:23 PM
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The 45 Schofields are used in 16 inch Trapper Specials, to give the shooter his ten rounds needed in a CAS stage. There have been a few 1873 45 Colt levers modified with adapters to handle the shorter 45acp length, rimmed, Cowboy Specials. I don't know how many 45 Cowboy Special rounds can be fitted into an 1873 Short Rifle.
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Old 12-17-2016, 04:16 AM
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This is a 6 year old thread, but my recent work with turning 303B cases into 35Rem cases has me wondering...

If you could turn down the diameter of a 45 AutoRim, while also thinning it from the body side, would it work? I'm thinking the too-short cartridge would give fits with feeding properly? I guess if you could get them to run, you'd be able to fit more in the tube and still be able to drive them to normal 45 Colt power levels...not sure you'd want that in a CAS rifle, though.
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Old 12-18-2016, 09:10 AM
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Auto rim brass is scarce enough you could trade or sell and buy MORE 45 long Colt brass. There are MANY shooters of Colts and S & W 1917s who don't like messing with clips!
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Old 12-18-2016, 02:22 PM
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IN an 1873 Win. clone, you modify the lifter, as that's as far back that you want the cartridge to go. With a soft cast 200 gr. bullet, and a lighter powder charge, in these 45 Cowboy Special cases, you could come really close to an original Henry R.F. cartridge, and the number of said R.F.'s which will fit into a magazine. Of course you could use a replica Henry to do the same thing. C.O.A.L. will be critical, nonetheless.
But why bother, since CAS only requires a ten shot string, which Scofield brass will allow, down to a 16" barrel/magazine. But if you just have to have a clone of that "Da#n Yankee Rifle, that you load on Sunday,-----, it has become possible to do so, by using these handloaded 45 Cowboy Special cases, and using flat nosed bullets.

Personally, I believe those Union Boys would have given their eye teeth for a Henry shooting B.P. 45 Colts, loaded with 255 gr. lead bullets, over 35-40 grs. of powder. And in a nutshell, this is why Winchester came out with their 44 WCF. You cannot slip a R.F. Henry cartridge into its chamber, nor put a C.F. 44 WCF into an earlier Henry Rifle. And in a reloadable brass C.F. case, it explains the extra thin brass case mouths, at the same time. For instance, the Benet inside primed ammo made for the 1873 Springfield Trapdoors, would sometimes shoot in both rim and center fire chambers. But I believe that the Gov't issued, Benet primed rounds, were only ever center fires.
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