Comments on: Another Brady “Cop Killer” Gun

By: Corey

Corey — Mon, 23 Nov 2009 17:54:09 +0000

In line with what Brad said, the two cartridges actually have very different ballistics. The Firearm Blog has a post about it, and it turns out the 5.7 has almost three times the power of the .22 Magnum: http://www.thefirearmblog.com/blog/2009/11/23/myth-busting-22-magnum-vs-5-7×28mm/

p.s. I’m a first time poster, longtime reader. I love this site.

By: Weer'd Beard

Weer'd Beard — Mon, 23 Nov 2009 10:53:27 +0000

Nomen I’d suspect a .22 LR conversion would be VERY difficult because of the length of the gun’s action:
http://olegvolk.net/gallery/d/34769-6/PMR30_locked_back_8294.jpg

Tho maybe if this sells really well (which at the price point, plus the wiz-bang factor, I suspect it will) maybe Kel-Tec will make a smaller .22 LR version

By: emdfl

emdfl — Mon, 23 Nov 2009 03:02:11 +0000

Grendel made an R-31 carbine (16″barrel?) that used the same mag. That one probably would give the 5.7 a run for its money.

By: Hyman Roth

Hyman Roth — Mon, 23 Nov 2009 00:40:34 +0000

I think AutoMag made a .22 magnum pistol as well.

By: Nomen Nescio

Nomen Nescio — Sun, 22 Nov 2009 18:41:11 +0000

anybody have an idea how modular that thing’s likely to be? as in, could there be a reasonably simple to install .22LR modification kit built?

By: Wolfwood

Wolfwood — Sat, 21 Nov 2009 22:43:26 +0000

Dear Kel-Tec,

For Christmas 2010, I’d like a carbine that takes magazines for the PMR30. Maybe it could fold like the Sub-2000, yes?

Also, please give into the temptation to make transformer guns. They already look like they should fit together to make a crank-driven, belt-fed gatling gun anyway, so why not give the people what they want?

Yours,
Wolfwood

By: Sebastian

Sebastian — Sat, 21 Nov 2009 21:34:41 +0000

It’s more aptly compared to a .22 Hornet. But it depends on the loading. The hot 5.7mms that aren’t available to civilians can outperform .22 magnums by a significant degree, but a hot .22 magnum round can get close to the neutered sporting rounds in 5.7mm

By: Brad

Brad — Sat, 21 Nov 2009 21:25:02 +0000

About time. The stupid Democratic 1994 AW ban killed a lot of interesting firearms before they had a chance to prosper.

As far as .22 mag vs 5.7mm interior ballistics however; I believe the 5.7mm generates power in a handgun length barrel equal to a .22 mag from a rifle length barrel. So directly equating .22 mag and 5.7mm is a little misleading. The fact that 30 rounds of .22 mag will fit into a handgun that would only fit 20 rounds of 5.7mm, should be a casual observers first clue that the two cartridges are not equivalent.

By: BadIdeaGuy

BadIdeaGuy — Sat, 21 Nov 2009 11:00:50 +0000

(note to self, read full article before commenting):
“It’s really no surprise that Kel-Tec is finally releasing (or should I say, re-releasing?) the PMR-30. Swedish designer George Kellgren initially designed the Grendel P30 .22 Magnum autoloader. Now, it’s been rehashed and re released as the Kel-Tec PMR-30.”

By: BadIdeaGuy

BadIdeaGuy — Sat, 21 Nov 2009 10:56:11 +0000

I was thinking Grendel also. Almost bought one a few years ago but everyone I talked to said there were feeding issues with them.

By: Ronnie

Ronnie — Sat, 21 Nov 2009 06:04:13 +0000

I believe that the last semi-automatic pistol in .22 Magnum was the Grendel P30, which I also believe was put out of production as a result of the AWB of 1994. It’s tough to design an effective and reliable semi-automatic action for the .22 Magnum cartridge, actually, due to something known as the “Blish Effect,” which is simply the tendency of two pieces of metal to stick together when high pressure gets exerted upon them both.

By: dogon1013

dogon1013 — Sat, 21 Nov 2009 03:34:54 +0000

EVERY new gun is on the list to be banned by the “gun control crowd”.

By: kaveman

kaveman — Sat, 21 Nov 2009 02:41:24 +0000

Well, James Brady/Reagen/SS dude were all shot with a .22LR revolver.

There’s no gun they won’t go after eventually.