4.5mm auxillary cartidge


#1

Here is what was presented as a Hungarian 4.5mm rimfire/centerfire auxillary cartridge for a barrel insert.

Rim 6.07mm
Base 4.81mm
Neck 4.78mm
Blt 4.55mm
CL 9.23mm
Total 11.78mm

Any idea of what type of inside prime system was used?
What fire arm was the barrel insert for?
When was this cartridge produced?

Thanks

Paul


#2

Anyone any thoughts or comments?

Thanks,

Paul


#3

I assume these were for adaptor cartridges and not for particular weapons.
As for the Hungarian military I have found only 6mm (.22 l.r. and Flobert) subcaliber systems.


#4

It’s a neat looking cartridge! Nice headstamp too!

-Dave


#5

Thanks for the replies.

EOD, it may be for an adaptor cartridge. The only information I have on it are verbal comments from the seller as being a rimfire/centerfire auxiliary cartridge and a reference to a 4.5mm cartridge with a slightly different “NT” headstamp in a previous 22 LR Forum thread.

Paul


#6

Hi Paul,

The recent thread started by Alex (EOD) regarding Hungarian ammunition made between 1945 and 1950 reminded me of this 4.5 mm cartridge adopted in 1948.

This cartridge was used with a barrel insert designed for the Hungarian Model 1948 pistol in 7.65 mm Browning caliber. Note the tweezers used for loading and extraction.

Scans from pistol manual (1949 edition):

Regards,

Fede


#7

Hello all,

we had a discussion about this round (maybe in an other calibers thread), because I cannot find it anymore
I Show again my pics from there…


04%2C50mm%20ungarische%20einsteck%20Box1%20gr%C3%B6sser

AND THE OTHER BOX (WITH FACTORY SIGN).

INSIDE OF BOX
04%2C50mm%20ungarische%20einsteck%20Box2

Peter


#8

Fede and Peter, what is the case length of these 4.5mm?


#9

Between 9.00 and 9.30 mm.


#10

Here is its: 22 Short & long Centerfire


#11

Fede and Peter,

Thanks for the additional information and photos.
It would seem to me that loading and unloading this aux chamber would be a very tedious procedure. How successful was this and how long was it used?

Thanks again
Paul


#12

Is it actually a rimfire/centerfire cartridge?

Paul


#13

Peter, that’s the logo of Vadásztöltény. It was also used in rimfire headstamps.

@Rimfire It is a centerfire cartridge.

Regards,

Fede