Pistol Calibers in Carbines?

[357sig]

My question is would the round below have a higher velocity in turn making it have more energy , or would the barrel be so much longer that it would slow down the velocity? This is a 40 S&W from Double Tap



Deep Penetrating and hard-hitting! This load offer both for woods and hunting applications.

The 200gr WFNGC @ 1050fps from a Glock 23!

990fps 435 ft/lbs from a 3.5"bbl.

1100fps 538 ft/lbs from a 4.5"bbl.



Caliber : .40 S&W

Bullet : 200gr. Wide Flat Nose Gas Checked

Ballistics : 200gr. @ 1050fps / 490 ft/lbs- Glock 23 (4.0"bbl)
Glock 22 4.5" bbl - 1106fps
Glock 27 3.5" bbl - 1009fps

Box of 50rds.

[DefensiveCarry.com]

[laeckcrov]

The longer the barrel, the slower burning your powder can be. I'd recommend hand loading a pistol caliber carbine so you could figure out what works best, and gives you more bang. I would also assume the carbine might have higher pressure limits, but that's a guess. I'm sure someone here would know though.

[357sig]

any other coments on velocity and ME from a carbine in pistol caliber???

[ccw9mm]

Well, with any specific cartridge, it's loaded with a certain amount of a given powder, and it's chosen that way to deliver a particular speed, power, pressure and flash in a given-length barrel. Often, the length of barrel in which it's intended to be used isn't specified.

Double Tap does specify, on many of its loads.

Consider the DT .44 Magnum: 240gr. Speer GDSP, which publishes the following ballistics:

* 1500fps - 1200 ft./lbs. - 6.5" bbl.
* 1810fps from a Win. 1894AE 16" trapper carbine (no force mentioned)

Same cartridge. Two different-length bbls mentioned. No indication of which is the better match, which it was really designed for.

I'm sure the reloading experts in the crowd can discuss the degree of tuning that can be done to optimize pressures, velocity, power, muzzle flash (wasted powder) ... all matched to the given bbl length.a load.

I also have pistol-caliber carbines. A Marlin 1894P 16" .44mag lever-action, and a Marlin 1894CP 16" .357mag lever-action.

My ammo choice, short of reloading (which I don't yet do): DoubleTap's Speer Gold Dot .357mag and .44mag, and Buffalo Bore's .44mag. These three loads have good power, low flash and excellent accuracy. Optimized for 16" length bbls? Dunno, but all three seem to work well in these two carbines.

My only question is: what's the pressure curve of these loads in the carbines versus a ~4-6" bbl revolver using the same cartridge; what's the relative muzzle flash and amount of wasted powder. While these loads seem to work well in my two carbines, without strict testing I can't be certain these are "optimized," as such.

[echobaby]

Higher velocity and energy from a carbine.

[automag928]

FWIW, and only because I've researched this already. Here are some examples on a Keltec Sub2000 9mm carbine from keltec forums. As you can see, a little higher velocity.

Win 147 gr PP - Five shots through the SUB-2000:

1111 FPS
1139 FPS
1119 FPS
1136 FPS
1130 FPS

1139 FPS - High
1127 FPS - Average
1111 FPS - Low
28 Extreme Spread
11 Standard Deviation


Win 147 gr PP - Five shots through the Kahr PM9:

938 FPS
923 FPS
910 FPS
934 FPS
915 FPS

938 FPS - High
924 FPS - Average
910 FPS - Low
28 Extreme Spread
11 Standard Deviation

[Beans]

About 25 years ago a southern Nevada Police department was testing some ballistic material to install in and around thier radio room, which was visible and exterior accessable to the public, but there was no access to the radio room by the public.

The radio room had bullet proof glass and they were looking for something to put inside the walls surrounding the room.

The material had stopped everything from fired from a handgun including .22 to a .44 Mag, until I showed up at the range with my Marlin 1894 Carbine, in .357 Magnum

We loaded it with 125 Gr Jacked Hollow points, PD issued ammo, and proceeded to poke holes in the ballistic material.

They rethought the material they had considered and I learned something

[Superhouse 15]

The only way to know for sure is to chronograph the particular load in your rifle and pistol. I have a bunch of pistol caliber carbines, an Uzi, Marlin Camp .45, Ruger PC9, etc. I also maintain some Kel Tec .40s and an AR in 9mm for some local PDs. The 9mms seem to be the most sensitive to different loads, but a chrono is the only way to know for sure. Anything else is just a guess.