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New Appreciation for the .45 ACP Cylinder

This is a discussion on New Appreciation for the .45 ACP Cylinder within the Ruger Single Action forums, part of the Pistol & Revolver Forum category; Not long after I got my first Flattop Convertible in .45 Colt/.45ACP, I got around to trying out the extra cylinder for .45 ACP. It ...


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Old February 23rd, 2020, 01:47 PM   #1
 
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New Appreciation for the .45 ACP Cylinder

Not long after I got my first Flattop Convertible in .45 Colt/.45ACP, I got around to trying out the extra cylinder for .45 ACP.
It was accurate enough, but since I reload for the .45 Colt, I couldn't see buying factory ammo for the .45 Auto so I put the .45 ACP cylinder in the back of the safe.
That was last spring. Last month I bought another S&W Shield, this one in .45 ACP. Suddenly I had a reason to acquire .45 ACP ammo, and I've been trying different weights and brands to find what shoots best in the Shield.

Today I thought I'd put the ACP cylinder in the Flattop when I went out shooting. Normally I keep it sighted for my woods load, a Speer 250 grain Deep Curl loaded to 1025 fps, zeroed at 50 yards.
I expected the .45 ACP ammo to shoot way different, and need an elevation adjustment to be close.
My Shield shoots 3-4 inches high at 25 yards with 230 grain loads, but is dead on with 185 or 200 grain carry ammo.

To my surprise, both W-W 230 hardball and Hornady 200 grain XTP were dead on at 25 yards, no sight adjustment needed. Recoil is mild and groups with both were all in the 10 ring and Bullseye, 1 1/2" or so.
I'll definitely be shooting the .45 ACP cylinder a lot more now !

This is my FT right after I got it, now it has Chig's Walnut grips:



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Old February 23rd, 2020, 04:57 PM   #2
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Very nice. Rugers remind me of a cast iron skillet. If you take care of both, they will last for many generations. You cant wear them out.
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Old February 23rd, 2020, 05:03 PM   #3
 
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Nice Flat Top! What great versatility having the two cylinders offers. The fact it is printing such widely varied loads to the same place is a real bonus.
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Old February 23rd, 2020, 05:08 PM   #4
 
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I have used my 45 /45 71/2 inch blackhawk wiht 45 acp match ammo and was competitive in local centerfire matches.
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Old February 23rd, 2020, 05:33 PM   #5
 
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I have a Ruger Lipsey convertible and is as accurate as anything. I have started reloading 45 ACP and is very versatile. I would highly recommend reloading since you enjoy it.
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Old February 24th, 2020, 09:40 AM   #6
 
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Yeah! I think acp cylinder is appealing in alot of situations, for me ... unless ammo skyrockets in price. Even then, you would think it would usually be readily available. Great caliber, I get overlapping groups in 1911 and hope to in revolver(s).

For just occasional use in some guns, cylinder half or moon clips sound good too, they lock-in headspace very well, especially if dealing with non-uniform case dims.

If just rare use, these things may not be worthwhile.
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Old February 24th, 2020, 10:14 AM   #7
 
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Quote:
Originally Posted by mrb View Post
Very nice. Rugers remind me of a cast iron skillet. If you take care of both, they will last for many generations. You cant wear them out.

Make that "A handsome cast iron skillet."


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Old February 24th, 2020, 11:33 AM   #8
 
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I still enjoy shooting mine. With both cylinders.

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Old February 24th, 2020, 12:06 PM   #9
 
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I've got the 4 5/8" blued 45 convertible flattop, along with two other full size 45 convertibles.

I surely do love my convertibles. I have a ton of ACP brass, and a stout +P loaded 45ACP is just right in these medium frame revolvers.
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Old February 24th, 2020, 02:02 PM   #10
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Originally Posted by mc89 View Post
I've got the 4 5/8" blued 45 convertible flattop, along with two other full size 45 convertibles.

I surely do love my convertibles. I have a ton of ACP brass, and a stout +P loaded 45ACP is just right in these medium frame revolvers.
I have the same gun, and I also have a ton .45 ACP brass. I’ve found it to be remarkably accurate even with very light loads under a 185 grain SWC. It’s a pleasure to shoot. I’d like to start reloading 45 Colt...but then I’d need a bigger frame Blackhawk with a longer tube for hunting. It’s a viscous cycle.
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Old February 26th, 2020, 06:58 PM   #11
 
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I recently picked up a Flattop 45/45acp Blackhawk Convertible similar to jeepnut711. (Blued 4 5/8).. I REALLY Like it, & after reading this, I feel the "Need" to start loading for the ACP cylinder.... Since I already own a 1911, I've got all the "goodies" to get started. I just need to do a bit of research to find some reliable revolver loads for the ACP!
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Old February 27th, 2020, 04:14 PM   #12
 
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Old February 27th, 2020, 04:48 PM   #13
 
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I was reading on the SASS site that they are shooting .45 cowboy specials loads out of their acp cylinders.

I have not personally verified this. Interesting concept though.

YMMD.

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Old February 29th, 2020, 03:52 AM   #14
 
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I have .45 ACP revos in both single action and double action. The single action don't require clips, the double action work better with clips. I find clips a pain and prefer not to use them. For that reason, I use .45 AR brass, loaded just like my .45 ACP on my Dillon, in both the single action Rugers and the double action Smith & Wessons. The .45 ACP cylinder has been trimmed to headspace .45 AR. The AR brass runs more smoothly in my guns and I feel a lot more comfortable loading small powder charges for mouse fart range loads in the .45 AR cases than in the .45 Colt cases.
This probably isn't for everyone, but it works for me.
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Old February 29th, 2020, 05:23 AM   #15
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Fortunately, Starline solved that problem for us.

They have .45 Auto Rim, which will work without a moon clip in revolvers that fire clipped .45 Auto.

However, .45 Auto Rim has a thicker rim that will not rotate in a .single action .45 acp cylinders, unless you modify the cylinder.

They introduced .45 Special, which is essentially the auto rim with a standard colt rim thickness. It gives you the ability to shoot an acp length cartridge with acp recipes in the standard colt cylinder.

If you trim it just a bit shorter, it will also fit and revolve in the blackhawk acp cylinder.

Because it is shorter than the scofield, I believe I would have been tempted to call it a "short colt". But then there is already enough confusion with the long/short designations.

It was a well overdue introduction. Starline makes some nice brass. A good company.
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