The only 25-mm gun is use by the Japanese was the type 96 Model 2 anti-aircraft/anti-tank gun. This is a multiple-barreled, air-cooled, magazinefed, automatic weapon.

Case: The case is rimless; has a slight taper and a pronounced neck, which is crimped over the after rotating band of the projectiles.

Length: 6.46 inches.

Diameter of base: 1.65 inches.

Material: Brass.

Weight (empty): 333.5 grams.

Propellant: The propellant is single-perforated, graphited grains of nitrocellulose. The grains are 2 mm in diameter and from 2.5 mm to 4.5 mm in length. The propellant weight is 102 grams.

Projectiles: The type of projectiles is indicated by painted the projectile body a solid color.

The following dimensions are common to all projectiles:

Projectile diameter: 0.96 inch (24.5 mm).

Width of rotating bands:

Forward: 0.71 inch.

Aft: 0.24 inch.

Figure 357 – 25-mm Ammunition.