[jhco]

can you shoot 45 auto rim out of a 45 acp revolver?

[jhco]

anybody?

[hiker44]

If I paid attnetion, I would have seen that you did say 'revolver'. In that case, it will work, since the casing on the .45 auto rim is designed to simulate the moon clip. (See comments below.) As long as the tolerances of the revolver are adequate to allow chambering, there should really be no issues. My previous post was in error, since I just automatically inferred 'semi-auto'. My appologies for the mixup.

[saltyyn1]

I don't have either, but I thought the reason 45 Auto Rim was developed was to allow it to be used in 45 ACP revolvers without having to use "moon clips".

[esq_stu]

.45 auto rim was made for the S&W .45 acp revolvers. It won't work in a Taurus. The rim on auto rim cases is very thick to emulate the addition of a moon clip. It fits in guns that take the thick moon slips but not the Taurus "stellar" clips. I routinely shoot .45 AR in my S&W 1917 .45 acp..

[kingpin008]

No. Please don't try that. The rim on the .45 auto rim will not allow the proper closure of the slide, leaving exposed shell casing protruding behind the chamber (2.29mm), as well as not allowing the barrel to lock up. That will leave the slide unlocked and will possibly cause parts and pieces of the shell casing to blow out, even if the weapon will fire. I doubt seriously if the rim will even feed, and it definitely will not extract, even if it will fire. Not a good idea to try to mix ammunition in any firearm if it is not specidically made for that weapon.

Uh, hiker - he's asking about revolvers, not autos. Might want to re-read and edit appropriately. :)

[hiker44]

kingpin008, Thanks for the heads up. He did say 'revolver' didn't he. It's been one of those days and I was hoping to be of some assistance to someone. :-)

[S&Wfan]

Of course! That's why they were invented . . . to allow the star ejector to remove revolver rimmed type cases from the .45ACP revolvers that initially used half moon clips.

Today, most of us use moonclips and .45ACP rounds in our .45ACP revolvers, although sometimes we use HOT loaded .45AR cartridges for hunting purposes. Either works well, but I prefer the fast loading/ejecting moon clips!

BTW, at the range I sometimes just put in light-loaded .45ACP ammo WITHOUT moonclips. It is easy to pull out the fired brass with fingernails.

Here's a photo I created to show the ejector lifting out AR brass but NOT the ACP brass, as well as other variations of the rounds. I think it will make it easy to understand how both types work.

Example 1 shows three of each type fully in the cylinder.

Example 2 shows you how the ejector, which is pushed partially, only lifts out the three AR cartridges, and MISSING pulling out the three ACP cartridges.

Examples 3 and 4 show how six AR brass and six ACP brass are ejected via the star ejector. Naturally, the star ejector contacts the underside of the moonclip to eject the clip and the spent rounds as one unit.

Hope this helps,

T.

http://216.77.188.54/coDataImages/p/Groups/363/363373/folders/277718/2220844IMG24664.JPG

[hiker44]

By the way gentlemen, I really do appreciate the quality photograpy I have found in this discussion group. The lighting and focus on almost all the photos I have seen in here have been of excellent quality. S&Wfan has literally 'told a story' using his descriptive photography. Good stuff.

[BlindJustice]

When the Doughboys returned from WWI, many brought back the M1917 revolvers they used in the trenches with the half-moon clips allowing exxtraction of the .45 ACP. S&W kept producing an identical to the
M1917 as a civilian option on the N-frame up until WWII.

Remington-Peters Ammunition company created the .45 Auto RIm
cartridge in 1920 and it duplicates the case dimensions of a .45 ACP
chambered Revolver cylinder. Note the N-frame .45 ACP/.45 Auto
Rim N-frame cylinder is positioned a bit more forward than the N-frames
chambered only for the normal .44 Special/.45 Colt and the Magnums
which have a rim thickness of approx. 0.0615" The extra thickness of
.45 Auto RIm is approx. 0.0910" in order to postion the primer the same
as the .45 ACP case length of 0.898" which chamber on the case mouth.
The Moon CLips only allow extraction NOT case chambering in relation to the
primer.

Anyway, it's kinda dumb S&W seems to have forgotten about .45 AUto RIm since they don't list the cartridge for any of their .45 ACP chambered
revolvers, maybe it's because none of the Big Four, Rem. Fed. WIn. or
CCI/Speer offer .45 AUto RIm any longer. I think Rem/Peters stopped
10 or more years ago.

.45 Auto Rim is available from CorBon, Buffalo Bore, Double Tap, and
Reeds Ammunition and Research & probably others that I'm unaware
of. Starline offers New brass cases in .45 AUto Rim for only $5 more
per 500 cases.

SAAMI keeps it's pressure ranking for .45 AUto RIm at 14,000 in the
same category as cartridges which started as black powder types such as
45 Colt, .44-40 & .38.40 - I think .44 Special came out in the era of
smokeless powder 1908 but the old balloon cases might be used in
some of those old guns, IMHO, .45 Auto RIm with it's thiscker rim has
more potential than SAAMI allows.... and has always been used in
the S&W N-frame. The standard load Rem. Peters offered
for years was a .45 RNL 230 gr. loaded to 810 FPS.
These days you can get Keith Type SWC 255 gr. at 900 FPS
and it's perhpas loaded to '+P' at 16,000 - I've read of some
reloaders who use 12-13 gr. of 2400 which must push pressures
towards the 20,000 level, although it's hardly
abusing the S&W N-frame since .45 ACP is 21,000 and .45 ACP +P
is 23,000.

FWIW
R.A.R offers a loading of 185 gr. Rem. Golden Saber @ 1,100 FPS

It's "Snappy'

Randall

















re





.

[chriske]

S&Wfan, that is about the most beautiful, best, clearest, most precise & complete answer to ANY question EVER.

(I fear I'm more seriously hooked on those S&W big bores than I thought)

[Hawk]

Anyway, it's kinda dumb S&W seems to have forgotten about .45 AUto RIm since they don't list the cartridge for any of their .45 ACP chambered revolvers...

Hunh. He's right.

Odd that they'd have the auto-rim mentioned in the DVD that comes with the 325 but absent from the website, but absent it is.

[rcmodel]

Could it be because nobody makes it anymore.

I think Double-Tap, Black Hills, and Cor-Bon are the only manufactures still loading it.

Starline is the only one making empty brass.
Oops! I see Remington is still making brass too.