10x27R Dutch Colonial revolver (Inert) (Edit: 9.4x27R KNIL Dutch Colonial Police Revolver, made from Dutch 6.5 Mannlicher cases)

[Sam3]

Had this sitting in a draw for some time and recently tried to get a better understanding and ID.

Dimensions (mm) are:

Bullet diameter: 10.0

Case Length: 27.5

Head: 10.9

Rim: 12.4

Total Length: 33.0

I believe that this might be: 10 x27R Dutch Colonial Police revolver {Soerabaya ammunition plant, East Java, Indonesia}.

Some information said manufacture was 1940.

The bullet has a 40 stamped into the lead.

The case looks as though it was reformed from something else.

I’m unclear if this was a factory manufactured cartridge or a; ‘homemade?’

Appreciate that there is some limited information at:
http://www.municion.org/Soerabaya/Soerabaya.htm
http://www.oldammo.com/october03.htm

Any additional background information would be appreciated.

Sam3

[Jack]

It was of local but official manufacture. The case was a 6.5 m/m Dutch rimmed Mannlicher of 1922 FN origin, extensively modified. I believe the 40 is the date the cartridge was assembled in its present form. Jack

[dutch]

This cartridge was normally made from fired Dutch 6,5 Manlicher cases.
The Dutch government had local ammunition factories in the Dutch colony, now Indonesia.
The month and year of the production was pressed in the bullet.
An example made in December 1888 and August 1908.
The box is from 4-40 made in the Pyrotechnische Werkplaats.

@gyrojet can tell much more about these rounds.

[bdgreen]

9.4mm Dutch Revolver Query

So I was able to pick up a box of this ammo… I believe its 9.4mm Dutch Revolver (East Indies variety). The individual rounds have no headstamp. The box is pictured below. Bullet is marked with a “2” on one side and “41” on the other. Anyone know who manufactured it? (37) P.S. Nr.3 P.W. 2-41 (I would think is the lot and Feb. 1941 manufacture date) 55mm x 46mm x 37mm [image] The box is nicely wax coated and is cardboard sectioned and has 12 rounds per box. [image] [image] [image] [imag…

[Sam3]

I’m thinking of, how to reference this cartridge in a collection?

Would it be more correct to call it a 10.4x27R rather than 10x27R?

Ref:
10 mm (Ref: Municion)
10.4 mm (Ref: DocAV)

Sam3

9.4mm Dutch Revolver Query

The KNIL used the 10,4mm Dutch revolver, whilst the Metropolitan Dutch Army used the 9,4mm revolver. ( basically a “.38”)
The 10,4 was deemed to have more stopping power, and to be more suitable for Colonial use ( enraged natives, animals, etc.) ( basically a “.44” ).

The Two KNIL Plants in Java (Bandoeng & Soerabaya) both assembled and reloaded ammunition for the KNIL…6,5 PS Nr1, etc.

Cases were mostly sent empty from Europe, then Loaded and reloaded in Java (NI). Sometimes, the 10,4 revolver round was made by cutting down 6,5 Rifle cases ( Dimensions of 10,4 Dutch revolver are very similar to the .44 Special case and similar S&W cases, which is similar to the head size of the 6,5 x53R Dutch cartridge. The absence of a Headstamp would signify Thinning of the rim by removing the Headstamp for fitting as a revolver cartridge.

The “o” which is still visible is a “reload” mark used by the Dutch.

The KNIL was still in full function in 1941, as the Japanese did not land in Java till early 1942.

Regards,
Doc AV

[Desperado]

Sam3,

attached you will find an excerpt of the ECDV (Ecra Caliber Data Viewer).
There you find a possible reference.

Regs

Jo

[Sam3]

As an addendum, there is a ‘4’ punched into the lead bullet, directly opposite the ‘40.’
4-40 (4-1940).

Many thanks to everyone for their insight.

Sam3