[Guest]

I've recently switched from carrying my .32 ACP to a 22 magnum NAA Revolver that I have had for some time now(circa 1994, so it's nothing new to me at all). I used to consider it a novelty to have but have found it as easy to carry as my pocket change, literally. Now, I normally carry a .45 compact and just use the smaller calibers for back-up guns. I don't really have a lot of experience with the 22 mag though other than punching paper with it. Anyone ever do any more 'research' on this caliber by way of testing or use?

 

[Josh Smith]

Mr. Zollo,

My only experience with this round comes from rifle use. I know it will tear up a squirrel using a rifle barrel.

However, out of an extremely small pistol such as one of those mini revolvers, I would say effect would be very minimal simply because the powder wouldn't burn sufficiently. I would go on to say that I would probably use a .22lr version because of extra burn time in the cylinder and less powder to burn.

I would consider this to be a very last ditch caliber/weapon combination in any scenario.

Josh <><

 

[Stephen A. Camp]

Hello. I do not have any data from the revolver you mention
but can give you what I do have from an old Hi Standard DA deringer.

Winchester 40 gr JHP: 1139 ft/sec, ES: 74, SD: 29

PMC 40 gr JHP:1162 ft/sec, ES: 68, SD: 26

Fired into super-saturated newsprint, this Winchester 40 grain JHP expanded to 0.29 x 0.31 x 0.24" tall and weighed 27.6 grains.

Best.

 

[Josh Smith]

Mr. Camp,

Do you happen to have the penetration figures?

Thanks,

Josh <><

 

[Stephen A. Camp]

Hello. Roughly 7 1/2 ".

Best.

 

[Guest]

Thanks for the photo's steve. What barrel legnth was the derringer if you don't mind me asking?

Last ditch defense tool no doubt, I even felt that way about the .32, but it's nice to know there might be some redeeming qualitiies about it.

It gets do hot and sticky around here (Augusta-swampland-, GA) that on some occasions a pocket pistol is about the only option unless you want to wear a fanny pack that screams gun or tourist, or the 'shoot me first' vest or hawiian shirt, especially when your out in the yard doing work or strolling around the block. I know for the purist that carrying is a full time job, but there are times the pocket pistol is the only option around here.

 

[Stephen A. Camp]

It's about 2" bbl.

Best.

 

[oldgranpa]

I'm really impressed by Stephen's test result on the .22magnum. By comparison, based on my wetpack tests compared to same rounds in gelatin, I get a factor of 2/3 for the wet paper.
So the 7 1/2" penetration would equate to roughly 11" in gelatin which is more than enough.
Might have to reconsider the .22magnum myself. Still carry a little .32acp pistol in my pocket.
Cheers,
og

 

[Stephen A. Camp]

Hello, oldgrandpa. Let me ask you a question, sir. Does the 2/3 you mention seem to hold pretty well true in most calibers? I've done enough testing primarily in 9mm and .357 magnum to say that I agree with your figure pretty much, but have not checked enough other calibers to see if it holds true throughout or if the factor changes at extreme velocity vs lower speeds or if significant caliber changes (ie, .32 to .45) make any meaningful difference.

FWIW, the wet pack figures seem to match what I'm seeing in animals a tad more closely than the 10% gelatin. Perhaps they're "tougher" or hide counts for considerable loss in penetration; I don't know but such is what I'm seeing.

 

[jimhigginbotham]

One of the first uses of a firearm by a permit holder in Kentucky (we started issuing in 1996) was a fellow I have corresponded with who interupted a bank robbery using one of these.

He managed to hit one of the robbers in the throat with no immediate effect. However the robbers were caught later when they sought medical attention for the wounded one.

The fellow told me that he now knew two things he would never do again.

1. intefer with a bank robbery (the police treated him like he was a nuisance to society!)

2. Never be anywhere without a .45 on his person! (he had a larger handgun in his truck but carreid the mini revolver for coinvience - see the "comfortable vs comforting thread").

Onward and upward,
Jim

 

[Guest]

Hey.

Over the summer I tested a few different .22LR and .22WMR loads from my revolver, although it did have a 6 inch barrel.

To my suprise, CCIs 40 grain JHP and Remingtons 33 grain ballistic tip both failed to expand. The CCI actually clogged with wet newspaper. The Remingtons polymer tip got blown out and the HP cavity where the polymer was filled with wet newsprint.

The only ammo that I tested in .22WMR that expanded was CCIs 30 grain TNT. I was really suprised at how explosive it was, even from a revolver. I dont have any retained weight or diameter numbers but I can tell you that it expanded well (probably 50-100 percent original diameter) and penitrated pretty deep (I didnt measure it though).

I am confident that the TNT will expand from a shorter barrel.

Stephen- Is the 2 inches including the chamber where the bullet is?

Also, are the bullets plated to jacketed? Im suprised that the Winchesters expanded but the CCIs didnt, even from a barrel over 4 inches longer.

Thanks!

 

[Stephen A. Camp]

Hello.

The barrel and chamber measure about 3.48".
The barrel length through which the bullet passes is about 2.44".

The Winchesters appear more like plated to me. The box describes them as being jacketed.

Best.

 

[rusty]

Google naaminis.com and you'll find specific ballistic testing out of each model they make for 22lr/22wmr.