Japanese 47 X 283/R case

[SG500]

Attached is a photo of a Japanese 47mm tank case plus close up shots of the headstamps.
I don't know if the projectile that came with it is the correct one. Does anyone have photos or information on what the correct projectiles for these 47mm rounds are.
The projectile looks to me like a 47mm Hotchkiss - can anyone confirm this please?
Thanks.
Dave.

 

[BOUGAINVILLE]

Japanese army 47mm anti tank/tank

Hi there mate,:tinysmile_shy_t:
Hope that with this info you will be able to figure it out.

47 MM ANTI TANK ROUND

Type 1 47 mm High Explosive Projectile.
Weight of complete round: 2.44 kg. (5.4 pounds).
Weight of projectile (without fuze): 1.15 kg. (2.5 pounds).
Weight of filling: 0.087 kg. (0.2 pound).
Filling: Two preformed paper?wrapped blocks taped together and waxed. The forward block consists of two pellets of picric acid - a ring pellet around the gaine and a solid pellet beneath the gaine. The after block is one piece of cast TNT.
Diameter at bourrelet: 47 mm. (minus tolerance).
Length of projectile (without fuze): 140 mm (5 1/2 inches).
Length of assembled round (without fuze): 389 mm. (15 5/16 inches).
Fuzing: Type 88 Inst. Nose fuze (gun type),
Type 88 short delay nose fuze (gun type).

Type 1 47 mm Armour Piercing High Explosive Projectile.
Weight of complete round: 2.75 kg. (6.1 pounds). 6 pounds 6.4 ounces.
Weight of projectile, fuzed: 1.38 kg. (3.0 pounds). 3 pounds 6.4 ounces.
Weight of projectile (without fuze): 1.27 kg. (2.8 pounds).
Weight of filling: 0.018 kg. (0.04 pound).
Filling: 90% RDX phlegmatized with 10% paraffin.
Diameter at bourrelet: 47 mm. (minus tolerance).
Length of projectile (without fuze): 143 mm (5 5/8 inches). 4.45 inches.
Length of assembled round: 398 mm (15 5/8 inches). 15.54 inches.
Width of rotating band: 12 mm.
Fuzing: Small Mk 2 base fuze (short delay).
Tracer: Yellow, 5 grams.
Armour penetration of Type 1 APHE shell
Range Penetration at 0 Penetration at 30
500 yards 2.75 inches 2 inches
1,500 yards 1.6 inches 1.2 inches


General
This cartridge was used in two Army weapons the Type 1 Tank and Type 1 Anti-tank guns. The case was usually made from brass however steel may be found. The case had the weapon designation stencilled on it in purple dye. The propellant load was 398 grams of single perforated cylindrical grains (7/16 inch long, 5/32 inch in diameter) of a graphited double-base powder of the following composition:
INGREDIENT PERCENTAGE
Nitrocellulose 60
Nitro-glycerine 34.5
Ethyl Centralite 3.0
Diphenylamine formamide 2.5

The propellant load was contained in a silk bag tied at the top and having an igniter pad attached to the bottom. The bag is marked with the propellant loading information.


The pics posted are as below;
*Type 1 47 mm High Explosive Projectile
*Type 1 47 mm Armour Piercing High Explosive Projectile
*Japanese 47mm cases showing the method of marking the case with propellant information.
*Left is the kanji symbol for Type 1 Anti-tank gun and right is for Type 1 Tank gun.

Cheers,
BOUGAINVILLE:tinysmile_shy_t:

 

[SG500]

Thanks Bougainville, yes that explains it all, thanks very much.

So, when are you going to write a book about all this Jap stuff, you keep posting some fantastic information?

Dave

 

[BOUGAINVILLE]

Hi there SG500,:tinysmile_shy_t:
I'm just compiling a data DVD packed full of information gleaned from all sources into factual one piece articles on each subject. It is all done with Word format so it is easy for me to edit and add to it as needed. I scan whole books etc. and edit pictures etc untill I get them up to my required standard. Those two daigrams are examples of my editing as the source material wasn't as clear or as good a quality.

This is all for my own private reasearch and for some of my interested friends back in Bougainville as they have no access to any information on the subject and there the stuff is everywhere.

Have also digitised every bit of material that I could find about Bougainville during WWII. There were around 60 thousand Japanese troops both IJA & IJNLF sationed there.

My material is still incomplete and am working on it daily in my spare time.

Cheers,
BOUGAINVILLE:tinysmile_shy_t:

Thanks Bougainville, yes that explains it all, thanks very much.

So, when are you going to write a book about all this Jap stuff, you keep posting some fantastic information?

Dave

 

[SG500]

Hi Bougainville sounds like you've got a big project going, will copies be available when complete?
If you need any decent photos of my very limited Japanese collection of rounds/links then let me know and I'll e mail pictures to you (the ones I've put on the forum are reduced size).
Ta,
Dave.

 

[HAZORD]

Dave,

Photos of rounds, projos, and parts. The nose fused HE is a repaint. The nose fuze and red adapter are left hand thread. The base fuze/tracer is right hand thread for the AP/HE. The nose fuzed projo should not have the "inerting" hole in the base. The red tip can be seen on one AP/HE projo.

I don't think the nose fuzed projo was ever loaded. It has new shiny clean laquer on the inside with no scratch marks and since it is a repaint, it was probably an arsenal pickup after the war, and hadn't been painted when it was liberated.

All rounds/parts inert/dehorned/neutered/empty.

John

 

[SG500]

Not one but THREE!!
REALLY nice rounds John, thanks for showing them.
Dave.

 

[BOUGAINVILLE]

Hi there SG500,:tinysmile_shy_t:
Have no idea when I will be finished, it seams like a never ending project. Just as I think that I have exhausted all the information that I have available I find new material.
I do burn a few copies now and then of what I have done so far. I will let you know when I do and you can have one.
Thanks for your offer of pics. I need them with white background etc. I have access to a huge collection not far from me that takes up a HUGE shed. One day I'll get there with white cardboard etc and take a heap of pics.

Cheers,
BOUGAINVILLE:tinysmile_shy_t:

Hi Bougainville sounds like you've got a big project going, will copies be available when complete?
If you need any decent photos of my very limited Japanese collection of rounds/links then let me know and I'll e mail pictures to you (the ones I've put on the forum are reduced size).
Ta,
Dave.

 

[BOUGAINVILLE]

Hi HAZORD,:tinysmile_shy_t:
Many thanks for sharing your photos. A great grouping.

Cheers,
BOUGAINVILLE:tinysmile_shy_t:

 

[HAZORD]

You guys are most welcome! Thanks for sharing your documents and photos.