.358 Win with a .22 hornet inside it?

[matt88m]

I was processing some once fired 7.62 NATO brass and found an odd case that did not belong. The outside case measures out to be a .358 Winchester. The primer pocket was reamed out to accept a smaller rimmed case that I believe is a .22 hornet. I used a punch to tap out the smaller case. There was some sort of sealant holding them together. The smaller case is ruptured at the mouth. I cant imagine any practical use for something like this and it had to have taken a decent amount of effort to modify the .358 Win case like that. Anyone have any actual knowledge of anything like this being done? Even a guess would be more than I have. Maybe there is a calgunner out there loading up a gross of these bizarre cartridges.

http://i955.photobucket.com/albums/ae31/fixturebum/DSCN0069.jpg

http://i955.photobucket.com/albums/ae31/fixturebum/DSCN0070.jpg

http://i955.photobucket.com/albums/ae31/fixturebum/DSCN0071.jpg

http://i955.photobucket.com/albums/ae31/fixturebum/DSCN0072.jpg

http://i955.photobucket.com/albums/ae31/fixturebum/DSCN0073.jpg

[ojisan]

An insert to fire .38 Special or .357 mag out of the 358 rifle's chamber ????


Welcome to CalGuns!

(June 2008 sign up date and only two posts?)

[TKM]

The OD of a .308 case neck is .35?.

Take a look at the picture in the top right corner. http://www.mcace.com/adapters.htm

Looks like somebody ejected and walked away from their chamber adapter.

Get a handful of ammo and see what actually fits.

I recall reading about something very similar recently, but that part of my brain is currently off-line.

[matt88m]

I thought I would add a few dimensions to aid the discussion
Exterior Case (.358 Winchester)
Case mouth - .359"
Hole Reamed in case - .294"
Recess for case rim - .349" diameter
Interior Case
Case mouth - Mangled/ruptured
Case rim - .346"
Case body - .292"

The case adapter idea is a good one. After searching 4 reloading manuals I can't find a cartridge that would fit into this particular modified .358 Winchester that would even come close to engaging the rifling in a .359 groove diameter. 22 hornet seems to be the closest dimensional match to the case I pulled out of the modified .358 Win. Any ideas on the practical use of such a thing?

[ojisan]

I've seen chamber adapters to shoot .22LR, .38/ .357 and .44 in various guns but this seems like some sort of 7mm round given the case and hole diameters.
These are usually advertised as a cheap shooting or survival type thing.
It does not seem like they would be accurate for very far.

[shadowofnight]

With most of the internal case supported by the larger case/chamber, you still get a lethal amount of velocity out of the firearm...and no traceable ballistics to the weapon ( Short range only, buckshot would have better flight characteristics then that bullet ) .

It's how an old machinist I worked with, described how he would get rid of the old lady on one of their hunting trips...just say she was mistakenly shot by another hunter. When they check the bullet, it doesnt even remotely belong to his rifle...he is in the clear( Just make sure you put your modified case adaper in your sock ) . He is long dead, so I know it wasnt him

[gunboat]

Are you sure it is a standard 358 case?
Perhaps someone's replacement for a berdan primer?
If it was just an adapter to fire hornet in a 358 it seems like the hornet case would rupture ahead of the parent case head from lack of support.
My tuppence

[G-forceJunkie]

I think its the tracer/spotter round for a SMAW.

[G-forceJunkie]

This: http://en.wikipedia.org/wiki/Shoulde...Assault_Weapon

Note: The 9mm spotting round is ballistically matched to the rocket and serves to increase the gunner's first-round hit probability. Each round consists of a special 9mm tracer bullet, crimped into a 7.62x51mm NATO casing with a .22 Hornet blank cartridge for propellant.[7] The system can be used in conjunction with the AN/PEQ-4 aiming light in place of the spotting rifle.

[shadowofnight]

This: http://en.wikipedia.org/wiki/Shoulde...Assault_Weapon

Note: The 9mm spotting round is ballistically matched to the rocket and serves to increase the gunner's first-round hit probability. Each round consists of a special 9mm tracer bullet, crimped into a 7.62x51mm NATO casing with a .22 Hornet blank cartridge for propellant.[7] The system can be used in conjunction with the AN/PEQ-4 aiming light in place of the spotting rifle.

Damn, that is really cool...nice find

[QuarterBoreGunner]

I think its the tracer/spotter round for a SMAW.

Ooooo... that really does look like it.

More info here.

[TKM]

That's it. The one I couldn't remember.

[G-forceJunkie]

In action. Basically, you fire off the tracer and see if your hold over is good. Repeat as necessary, then fire off the rocket.

[matt88m]

Nice find. That looks like exactly what I have. This is definitely going in the cartridge collection. Thanks for all the info.