CARTRIDGE SA 12 BORE 70 MM PLASTIC ASTRAM

GENERAL:

This cartridge can be fired from all types of 12 Bore guns having 70 mm or more chamber length. This is a superior cartridge compared to other types of 12 bore cartridges and is used for shooting sports. Smokeless propellant powder and non-corrosive caps are used in the cartridge. Hardened lead shots give a good impact on the target. The body is made of special grade plastic tubes to withstand higher pressures and achieve higher velocity compared to paper cartridges. The use of plastic power piston with pouch provides better gas sealing and higher accuracy, i.e. better pattern of shots on target.

 

PHYSICAL CHARACTERISTICS:

Case

Made from bi-axially oriented HDPE plastic tubes

Primer

Mercury fulminate based compo (23 to 29 mg)

Projectile

Lead-Antimony alloy shots (Chilled)

Propellant

Double base shotgun propellant (1.7 to 2.1 g)

Propelling system

LDPE plastic power piston with pouch

Cartg. Length

58 mm

Empty Case Length

70 mm

Weight of Lead shots

32 g

Cartg. weight

48 g Approx

Shot size

From biggest no. 1 (3.63 mm) to smallest no. 9 (2.02 mm)

No. of Shots

113 in size 1 to 652 in size 9

Type of Closure

Star Crimping

 

BALLISTIC CHARACTERISTICS:

Parameter

Measure

Pressure

Max 54.0 Mpa at 1” & Max 29.4 Mpa at 6”

Velocity at 9 mtr from muzzle

350 +/- 15 m/s

Accuracy at distance of 27 m

Min 56% of pellets in a circle of dia. 760 mm on target, Min 90% when fired from choke barrel.

 

IDENTIFICATION MARKS ON CARTRIDGE:

A) Brass head:

Mark

Meaning

KF

Manufacturing Unit –
Ammunition Factory Khadki.

12

12 Bore Cartg

B) Case: Shot No, Shot weight & Brand name are printed on the cartg. case.
 

QUALITY:

All components like cases, propellant and percussion caps undergo strict quality checks and are proof tested before use in the manufacture of the cartridges. The manufacture of the cartridges in automatic loading machines in controlled atmosphere ensures uniform and highly consistent quality in the cartridges. Finished cartridges are subjected to further inspection and proof testing to ensure quality of performance.

 

PACKING:

25 cartridges are packed in multicoloured paper carton. Then 5 such Cartons are packed in polythene bag & heat sealed. Two such bags are packed in one corrugated paper box. Thus each corrugated box contains 250 cartgs.

Dimensions of one corrugated box                 : 330 x 240 x 130 mm  
Gross weight of one packed corrugated box    : 13.0 Kg approx

 

SHELF LIFE:

If properly stored in packed condition, expected shelf life is around 5 years. Ammunition should be kept in a cool and dry place, and protected against direct sunlight and rain.

 

HAZARD CLASSIFICATION:

Explosive Classification                         : 1.4S
Fire Fighting Classification                     : Clause 1

 

PRECAUTION FOR USE/ FIRING:

Weapon should be in good condition. Only authorised & trained personnel should fire the cartridges. Barrel should be cleaned every time after firing. Periodical checks of weapon with gauges are essential to ensure that its CHS, SP and FPI are within the limits.
 
Contact :

Marketing & Export Division
Ordnance Factory Board
Ayudh Bhawan
Government of India
Ministry of Defence
10A, S. K. Bose Road, Kolkata – 700 001, India.

Tel: 0091-33-2248 9027 / 2248 2103 / 2248 5077-80
Fax : 0091-33-2248 1748/2210 8235
Mail : ofbtrade@dataone.in
www.ofb.gov.in