The .45 ACP Family

mikehaas · December 16, 2008, 07:56 AM

The .45 ACP Family

Recently I did some AmmoGuide.com research on the .45 ACP and other rounds inspired by the .45 ACP. I thought others might enjoy these screenshots of the info I accumulated...

(CLICK HERE to run your own ballistic comparisons)

Mike

Sevens · December 16, 2008, 08:29 AM

ALL these and no .45 Auto Rim?!

rhillen · December 16, 2008, 09:57 PM

Neat post - Thanks

Johnny Guest · December 23, 2008, 07:22 PM

I can understasnd why you're calling these cartridges the ".45 ACP family," what with them all having same dimensions but for length. But there's no way you can avoid calling the .45 Auto Rim an immediate descendant of the .45 ACP. Rim is vastly different, yes, but rest of it is a near-duplicate of the military ball cartridge.

And, speaking of "family:" How about the .38/45 and 9mm/45? I mean, the .45 AC case necked down and fired from a rechambered .Super .38 or 9mm barrel. And, haven't I read of a .30/45?

Me, I'll stick with only the .45 ACP and Auto rim.

Merry Christmas, all.
Johnny

bluetopper · December 23, 2008, 10:01 PM

Thanks for going to the time and trouble to aquire and post the info.

mikehaas · December 31, 2008, 03:01 PM

Quote:

...there's no way you can avoid calling the .45 Auto Rim an immediate descendant of the .45 ACP...

Apologies for my grevious error.

No rim bigot here. My original AmmoGuide Search (using the AmmoGuide Cartridge Identification and Search Tool)included a rim dimension of .480"+-.01" so the ARim didn't show up. But here's a graphic with the Auto Rim included, right beside it's brother...

Again, just click the graphic to compare the rounds ballistically.

Quote:

...And, speaking of "family:" How about the .38/45 and 9mm/45? I mean, the .45 AC case necked down and fired from a rechambered .Super .38 or 9mm barrel. And, haven't I read of a .30/45?...

Interesting idea but non-452" diameter wildcat variations weren't in my original research goals. But here are a few more .45 ACP derivatives on AmmoGuide of other bullet diameters (the .45 Remington-Thompson being .447")...

And Happy 2009, BTW.

Mike

buckwoods · December 31, 2008, 09:06 PM

Many thanks for the very informative and useful post. This forum rocks!

73-Captain · January 1, 2009, 04:37 AM

Jeffredo Gunsight had a complete line of cartridges based on necked down .45 ACP cases or shortened, reamed and necked down .308/.30-06 cases.

5.56mm J-Mag

.257 J-Mag

.308 x 1"

.357 J-Mag

.41 J-Mag

.45 J-Mag

.45 J-Mag Mk2

There may be others. Those are the ones I am familiar with.

C.

ZX10Aviator · January 1, 2009, 01:32 PM

Cool info thanks for sharing, guess I dont understand the gap excitement over an acp.

ForneyRider · January 7, 2009, 01:54 PM

45 GAP is to make a smaller grip in the Glock pistols. It is higher pressure than a 45 ACP.

dandydany · March 8, 2009, 11:36 PM

very nice info mikehaas , I wonder if your source had info about the .45 rimmed cartridges too....What is the "HP" you mentionned? Thanks very much, Dan

mikehaas · August 14, 2009, 03:16 PM

Quote:

What is the "HP" you mentionned?

That's the ".45 Automatic Short"...

The .45 Automatic Short (aka .45 HP) was developed to enable legal ownership by private citizens of pistols designed for the .45 ACP cartridge in countries where the possession of automatic handguns in military chamberings is not allowed by law. Italy, France and Mexico are among those countries.

This cartridge is a .45 ACP case shortened by one millimeter. A regular 230-grain FMJ bullet is seated to the same OAL - muzzle velocity is identical to the 45 Automatic.

The only modification required to the firearm is a barrel change. All other parts remain the same. The shorter chamber prevents loading and firing of full length 45 ACP cartridges, thereby complying with the letter of the law.

Only Hirtenberger AG of Austria has commercially loaded this ammunition. It was produced between 1985 and 1987, now discontinued.

----------
(Thanks to Max Velocity for submitting this cartridge.)

Edward429451 · August 26, 2009, 05:25 PM

Wow, that was an informative post Mike! Clearly you can see my desire for a 45 Winmag Carbine though, right?!

I think Cooper was right. This platform combo that I speak of would outclass the .223 setup, especially in an urban scenario.

C'mon, be honest! Who all would buy a 45Winmag carbine/upper if they started making it??

I KNOW I would! Probably buy 2 or 3.

December 16, 2008, 07:56 AM	#1
mikehaas Member Join Date: March 27, 2006 Posts: 25	The .45 ACP Family The .45 ACP Family Recently I did some AmmoGuide.com research on the .45 ACP and other rounds inspired by the .45 ACP. I thought others might enjoy these screenshots of the info I accumulated... (CLICK HERE to run your own ballistic comparisons) Mike

December 16, 2008, 08:29 AM	#2
Sevens Senior Member Join Date: July 28, 2007 Location: Ohio Posts: 11,755	ALL these and no .45 Auto Rim?! __________________ *Attention Brass rats and other reloaders:* I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.

December 23, 2008, 07:22 PM	#4
Johnny Guest Moderator in Memoriam Join Date: August 28, 1999 Location: North Texas Posts: 4,123	Yeah, 45 Auto Rim! I can understasnd why you're calling these cartridges the ".45 ACP family," what with them all having same dimensions but for length. But there's no way you can avoid calling the .45 Auto Rim an immediate descendant of the .45 ACP. Rim is vastly different, yes, but rest of it is a near-duplicate of the military ball cartridge. And, speaking of "family:" How about the .38/45 and 9mm/45? I mean, the .45 AC case necked down and fired from a rechambered .Super .38 or 9mm barrel. And, haven't I read of a .30/45? Me, I'll stick with only the .45 ACP and Auto rim. Merry Christmas, all. Johnny

January 1, 2009, 04:37 AM	#8
73-Captain Junior member Join Date: December 14, 2007 Posts: 199	.45 ACP "Family" Jeffredo Gunsight had a complete line of cartridges based on necked down .45 ACP cases or shortened, reamed and necked down .308/.30-06 cases. 5.56mm J-Mag .257 J-Mag .308 x 1" .357 J-Mag .41 J-Mag .45 J-Mag .45 J-Mag Mk2 There may be others. Those are the ones I am familiar with. C.

January 7, 2009, 01:54 PM	#10
ForneyRider Senior Member Join Date: December 4, 2007 Location: Forney, TX Posts: 725	45 GAP is to make a smaller grip in the Glock pistols. It is higher pressure than a 45 ACP. __________________ When all is said and done, there is a lot more said than done.

December 16, 2008, 09:57 PM	#3
rhillen Member Join Date: March 16, 2008 Location: Sacramento Posts: 41	Neat post - Thanks

December 23, 2008, 10:01 PM	#5
bluetopper Senior Member Join Date: December 16, 2005 Location: Northeast TX Posts: 1,197	Thanks for going to the time and trouble to aquire and post the info.

December 31, 2008, 09:06 PM	#7
buckwoods Member Join Date: November 1, 2008 Posts: 17	Many thanks for the very informative and useful post. This forum rocks!

January 1, 2009, 01:32 PM	#9
ZX10Aviator Senior Member Join Date: November 10, 2008 Location: NW. Washington Posts: 345	Cool info thanks for sharing, guess I dont understand the gap excitement over an acp.

March 8, 2009, 11:36 PM	#11
dandydany Senior Member Join Date: August 28, 2008 Location: happy Camp CA Posts: 133	very nice info mikehaas , I wonder if your source had info about the .45 rimmed cartridges too....What is the "HP" you mentionned? Thanks very much, Dan

August 26, 2009, 05:25 PM	#13
Edward429451 Junior member Join Date: November 12, 2000 Location: Colorado Springs, Colorado Posts: 9,494	Wow, that was an informative post Mike! Clearly you can see my desire for a 45 Winmag Carbine though, right?! I think Cooper was right. This platform combo that I speak of would outclass the .223 setup, especially in an urban scenario. C'mon, be honest! Who all would buy a 45Winmag carbine/upper if they started making it?? I KNOW I would! Probably buy 2 or 3.

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