.45 Auto Rim?

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Rodfac, your last paragraph; will the SAA accept ARs or not?

Had a '55 Target, in a present case. In an awful fit of stupidity, I traded it on some damned thing. Still kicking myself.... :(
Moon
You could probably get the chambers cut to accept the AR's rim, without affecting headspace with the ACP.
 
You could probably get the chambers cut to accept the AR's rim, without affecting headspace with the ACP.
It's true, but, since 45 Cowboy Special (45 ACP with rim) brass is available https://www.starlinebrass.com/45-cowboy-special , I don't see any advantage in converting SA revolver 45 ACP cylinder to 45 AR. I don't know about SA Italian clones, but as far as I know, all Ruger SA 45 convertible revolvers (45 Colt + 45 ACP) have cylinders made flush (no counterbore) for standard 45 Colt rim. 45 Cowboy Special has the same rim.
 
Does anyone know if a HKS speed loader #25 for.45Colt (aka .45LC) fit or accept the .45AR?
I’ve got a half dozen I’ve picked up, but no shell holder for the presses. Will ave to justify the expense!

My .45acp revolver is a Webley MkII “shaved” from .455 Webley.
It has one slightly swollen chamber, but easily extracts appropriately loaded ammo. It’s a thrill to shoot with 3.8gr of Bullseye under a 200gr SWC. At 7yds shoots POI/POA.
SMOOTH doesn’t begin to describe the trigger!
Moon clips are a drag to load and unload!
 
Does anyone know if a HKS speed loader #25 for.45Colt (aka .45LC) fit or accept the .45AR?
I’ve got a half dozen I’ve picked up, but no shell holder for the presses. Will ave to justify the expense!

My .45acp revolver is a Webley MkII “shaved” from .455 Webley.
It has one slightly swollen chamber, but easily extracts appropriately loaded ammo. It’s a thrill to shoot with 3.8gr of Bullseye under a 200gr SWC. At 7yds shoots POI/POA.
SMOOTH doesn’t begin to describe the trigger!
Moon clips are a drag to load and unload!

Moonclips rule! I almost wish my Webley was shaved for 45 ACP but I am glad it is not.

The #25-5 HKS will not work. It is intended for 45 Colt and the thicker rim of 45 AR will not let the lock turn to the locked position and retain the cartridges. HKS does make a Speed loader specifically for the S&W model 625/25 (45 ACP) intended to be used with 45 Auto Rim, model #25M
 
45 Auto Rim
https://dayattherange.com/?p=4415
Only posting the article in this way as there are 28 pictures or so in the article said to many to post here.
Unsponsored website I get not a red cent for you visiting but a report of what autorim works in 625, 22-4 a few others.
 
45 Auto Rim
https://dayattherange.com/?p=4415
Only posting the article in this way as there are 28 pictures or so in the article said to many to post here.
Unsponsored website I get not a red cent for you visiting but a report of what autorim works in 625, 22-4 a few others.
That’s a good article. I especially found interesting that SWCs and JHPs shoot better than hardball.

Why would a 255 gr. flat point be more suitable for hunting than a 230 gr. JHP? Seems like it would be in the 800 fps neighborhood, unless loaded quite warm… A fellow would REALLY have to know his trajectory to hunt with 45 ACP/AR, and even then, anything outside 50 yards would be iffy.
 
It should also be mentione
Why would a 255 gr. flat point be more suitable for hunting than a 230 gr. JHP?
A 230 grain JHP in 45 ACP if it expands likely won't penetrate deeply enough on game to be effective. If it doesn't expand it will act as hardball; pushing tissue aside as it penetrates. Flat points (in theory) and wadcutters/semi-wadcutters (in actuality) cut through tissue causing greater blood loss.
 
It's true, but, since 45 Cowboy Special (45 ACP with rim) brass is available https://www.starlinebrass.com/45-cowboy-special , I don't see any advantage in converting SA revolver 45 ACP cylinder to 45 AR. I don't know about SA Italian clones, but as far as I know, all Ruger SA 45 convertible revolvers (45 Colt + 45 ACP) have cylinders made flush (no counterbore) for standard 45 Colt rim. 45 Cowboy Special has the same rim.
45 cowboy special have been on backorder forever. Wish I could get some...
 
Update from the Starline ballistician.

I asked:
With the added thickness to the case head, will the .45 AR brass hold up under .45 Super pressures? Basically, does the thick case head buy me anything as far as pressure levels are concerned?

He replied:
We haven't tested it that high, but I wouldn't be surprised if it held up perfectly fine to those pressures. Obviously anytime you are loading above SAAMI pressures you are doing it at your own risk.
 
The best way to find out is to test 45 AR under 45 Supper pressure.

Second best method would be to cut both, 45 AR and 45 Super cases and compare them. As a matter of fact, assuming that metal (brass) is for both the same, and inner shape of powder space also the same, I wouldn't be surprised if 45 AR is even stronger than 45 Super:

wtzS4zp.jpg
 
As a matter of fact, assuming that metal (brass) is for both the same, and inner shape of powder space also the same, I wouldn't be surprised if 45 AR is even stronger than 45 Super:
The general method is to express case capacity in how many grains of water it will hold. Weigh both cases empty, then weigh them again filled with water and you'll know the exact difference in capacity.
 
The general method is to express case capacity in how many grains of water it will hold. Weigh both cases empty, then weigh them again filled with water and you'll know the exact difference in capacity.
I agree! However, I believe that probably the most critical areas are thicknesses of the bottom and just above grooves.

Regardless, unless there are valid data, I would hesitate to go into 45 Super pressure range. IMO, revolver cylinder on S&W is not as strong as 1911 barrel with full support chamber. Please correct me if I am wrong.
 
…IMO, revolver cylinder on S&W is not as strong as 1911 barrel with full support chamber. Please correct me if I am wrong...


The S&W revolvers chambered in 45 ACP, with the alpha-numeric serial numbers are fully capable of using the 45 Super. Some have been modified for the 460 Rowland. I use the 45 Super in my S&W Model 22-4 and my S&W Model 625 Mountain Gun. I will not use it in my older ACP revolvers.

Kevin
 
Don't take this too serious but I feel I must point out... :)

In this thread we discuss how to take a revolver that was, historically speaking, base on a revolver originally chambered in 45 ACP out of need/necessity. It was never meant to be a power house it was meant to be a service revolver, chambered in 45 ACP due to supply issues (lack of 1911's and lots of 45 ACP available). Now rather than enjoying that aspect (commonly available 45 ACP ammunition in a revolver) and the most important aspect that evolved out of that, the full moonclip (from the original 2-round and half moonclip). We are going to take that silly hard to find 45 AR brass and try to hot rod this short cartridge up to 460 Rowland pressures to try to make this revolver into a hot 45 Colt revolver. :cool:

Probably would have been better off trading that Model 25 in 45 ACP for a 25 in 45 Colt or a 29 in 44 mag... :p
 
I wouldn't worry about case strength. It's just a gasket anyway.

I also would not run an N-frame at .460Rowland pressures. It's way over "Ruger only" levels.
 
The S&W revolvers chambered in 45 ACP, with the alpha-numeric serial numbers are fully capable of using the 45 Super. Some have been modified for the 460 Rowland...
I can see 45 Super pressure level in late S&W M25 (but only if S&W approves), But 460 Rowland:

".460 Rowland... Maximum pressure 40,000 psi", https://en.wikipedia.org/wiki/.460_Rowland

I wouldn't like to be on the range when somebody shooting .460 Rowland from any S&W M25.
 
The S&W revolvers chambered in 45 ACP, with the alpha-numeric serial numbers are fully capable of using the 45 Super. Some have been modified for the 460 Rowland. I use the 45 Super in my S&W Model 22-4 and my S&W Model 625 Mountain Gun. I will not use it in my older ACP revolvers.

Kevin
HLC-02XX
 
I wouldn't worry about case strength. It's just a gasket anyway.

I also would not run an N-frame at .460Rowland pressures. It's way over "Ruger only" levels.
40,000 PSI. That's beyond 357, 41, and 44 magnum levels.
 
Had a buddy that was a Marine Officer who on a Med tour carried his privatly owned 1917s ( one of each)

His reloads were half moon clips carried in a WWII bandage pouch, but in the guns he carried Auto Rim because he thought it looked neater.

His Colonel liked him to wear his rig ashore because it always excited the locals. One revolver in a shoulder rig and the other on his belt under his right hand. Under his left he carried a Randal Made #2 as long as Bo made them. It got called a Gladius by many locals and some were more impressed with the knife than the revolvers.

“Americans…. always over dressing for the wrong occasions.”

-kBob
 
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