Any idea what this is?

[deces]

http://www.ar15.com/ammo/project/Ammo_Cross_Sections/Exotics.jpg

[Dutchman]

There are 4 items in the photo. Exactly what are you asking about?

[Anonym]

Rube Goldberg experiments? First looks like someone tried to insert a steel core into a copper jacket.

That second one is interesting. Looks like a .22blank is used to propel an internal bead up to strike a primer which then propels a BB?

Third one I have no idea what they are trying to do.

:confused:

[SOFMatchstaff]

I know what it is, but with no scale, its hard to determine a caliber. the complicated cartridge allows a
recoil operated system to cycle with the obvious light projectile mass shown.
If the two on the right are 50s, then the practice round is in the 06 class/size. hard to tell.

the Soviets made a suppressed round that has a similar construct/operating premise in 7.62,
but the gas was fully contained in the case and weapon. The one pictured looks to be a dual charge system
where the primary supplies the operating energy and fires the second to propel the projectile.

thats my story and I'm stickin to it..... maybe..

[wallenba]

Guessing here. Left: armor piercing. Center: Less than lethal. Right: tracer.

[Dan Cash]

Guessing here. Left: armor piercing. Center: Less than lethal. Right: tracer.

You are correct but the center is a floating chamber sub caliber or short range munition designed to operate the recoil mechanism of a Browning Machine Gun and used on indoor ranges.

[JeffinNZ]

I'm with Dan.

[John Allen]

I have no idea if Dan is right but am totally impressed that he knows this.

[roverboy]

Yeah, that was impressive. Dan's good.

[deces]

It is a .556 iirc

[SOFMatchstaff]

OK, if its a.556, what system would it run in? I cant think of a recoil operated weapon in that caliber. The HK 33/93 would be the
closest and I doubt it would run without special internals.

It is not a floating chamber, an example of a floating chamber is a Colt Ace 22 barrel.
The example shown is a sealed captured piston system.

Looks to be way to complicated for economical practice use , It would be interesting to see what it actually is used in.

[deces]

http://www.defensereview.com/ultimate-training-munitions-utm-5-56mm-force-on-force-training-ammunitionmarking-cartridges-in-surefire-mag5-60-hcm-60-shot-quad-stack-ar-15m16-rifle-magazine/
Many other neat things here to.
http://www.ar15.com/ammo/project/Ammo_Cross_Sections/index.htm#7.62x51%20M62%20brown%20tip,%20green%20t racer

[deces]

http://www.youtube.com/watch?v=xWd_FQsOxXM

[SOFMatchstaff]

Simunitions, different operating design, but same concept. The ones I've had are simpler and use an aluminum shoulder band and a standard brass casing as the driving piston. Both require internal modifications as I noted before. The scale of the picture threw off the comparison accuracy quite a bit.

There is a version that is NOT low lethal, no color marker, but a black non metallic projectile that is indoor range usable on pistol rated ranges.
The UTM stuff is over a $1250 per thousand, not including the weapon mods. pricey..... the Simunitions stuff is a lot less, but still pricey.

Fun and games on our dime..