Craftsman 441
CGN Regular
- Location
- Wainwright
Does anyone know what the weight is of the ball ammo the CF issues? I have heard it's anywhere from 45 grains to 56 grains. Maybe it changed with different years. Does anyone know for sure?
CF Issue 5.56x45mm NATO Specs
- Thread starter Craftsman 441
- Start date
- Location
- land of f-cktards
I have heard 62 as well......wouldn't an ammo tech know?
Craftsman 441
CGN Regular
- Location
- Wainwright
The dope on CF 5.56 mm Ammo
OK, I was curious, so I turned to the e-pubs on the DIN. I found C-74-305-KA0/TA-000 'TECHNICAL INFORMATION-CARTRIDGES 5.56 mm ALL
TYPES'. I thought I'd share:
C77 Ball
Casing - The cartridge case is made of drawn brass, comprising approximately 70% copper and 30% zinc. It is 44.7 mm (1. 76 inch) long and weighs approximately 5.9 grams (91.0 grains).
Projectile - The bullet is 23.2 mm (0.915 inch) long and weighs approximately 4 grams (61.7 grains). It is boat-tailed and covered with a gilding metal jacket, comprising approximately 90% copper and 10% zinc, and having a milled cannelure. The nose of the bullet core consists of a hardened carbon/steel penetrator 8.1 mm (0.319 inch) long, weighing approximately 0.65 gram (10 grains), in the general shape of a truncated cone. The remainder of the bullet envelope is filled with 98/2 lead/antimony weighing approximately 2.1 grams (32.5 grains). The cartridge case is crimped into the cannelure on assembly.
Propellant - Approximately 1.65 grams (25.46 grains) of propellant (Olin WC 844 or PRB SS109 - Ball Powder) are used in each C77 cartridge.
Precision - When fired from a standard proof barrel at a range of 550 metres, all shots shall be in a group in which each horizontal and vertical standard deviation is 200 millimetres or less.
Velocity - The average velocity measured at 24 metres from the muzzle shall be approximately 926 metres per second.
Pressures - The average case mouth pressure shall not exceed 380 MPa (approximately 55,100 psi). The average peak port pressure shall not be less than 88 MPa (approximately 12,800 psi).
Muzzle Energy - 1716 joules.
Penetration - At a range of 570 metres, 80% of the bullets shall perforate (that is at least one bullet fragment shall pass completely through) a 10 gauge mild steel plate at 01 obliquity.
C78 Tracer
Projectile - The bullet is 27.6 mm (1.090 inch) long and weighs approximately 4.0 grams (61.7 grains). It has a cylindrical base and is covered with a gilding metal jacket having a milled cannelure. A second cannelure is added to facilitate identification during manufacture and prevent possible mixing with ball bullets and cartridges. The point of the bullet is filled with 98/2 lead/antimony weighing approximately 1.94 grams (30 grains). A charge of approximately 0.22 gram 3.4 grains) of IVI-1001 tracer composition, approximately 0.03 gram (0.5 grain) of I-280 sub-igniter composition and approximately 0.03 gram (0.5 grain) of I-136P igniter composition is pressed into the base and is retained in position by a gilding metal securing disc. The cartridge case is crimped into the cannelure on assembly.
Accuracy - When fired from a standard proof barrel at a range of 550 metres, all shots shall be in a group in which each horizontal and vertical standard deviation is 300 millimetres or less.
Velocity - The average velocity at 24 metres from the muzzle shall be 895 metres per second.
Muzzle Energy - 1649 joules.
Weight of Propellant - 1.62 grams (25 grains).
Weight of Bullet - 4.0 grams (61.7 grains).
Length of Bullet - 27.70 mm (1.090 inches).
C79, C79A1 Blank
C80, C80A1 Dummy
C83 High Pressure Testing
C163 Line Throwing Device
OK, I was curious, so I turned to the e-pubs on the DIN. I found C-74-305-KA0/TA-000 'TECHNICAL INFORMATION-CARTRIDGES 5.56 mm ALL
TYPES'. I thought I'd share:
C77 Ball
Casing - The cartridge case is made of drawn brass, comprising approximately 70% copper and 30% zinc. It is 44.7 mm (1. 76 inch) long and weighs approximately 5.9 grams (91.0 grains).
Projectile - The bullet is 23.2 mm (0.915 inch) long and weighs approximately 4 grams (61.7 grains). It is boat-tailed and covered with a gilding metal jacket, comprising approximately 90% copper and 10% zinc, and having a milled cannelure. The nose of the bullet core consists of a hardened carbon/steel penetrator 8.1 mm (0.319 inch) long, weighing approximately 0.65 gram (10 grains), in the general shape of a truncated cone. The remainder of the bullet envelope is filled with 98/2 lead/antimony weighing approximately 2.1 grams (32.5 grains). The cartridge case is crimped into the cannelure on assembly.
Propellant - Approximately 1.65 grams (25.46 grains) of propellant (Olin WC 844 or PRB SS109 - Ball Powder) are used in each C77 cartridge.
Precision - When fired from a standard proof barrel at a range of 550 metres, all shots shall be in a group in which each horizontal and vertical standard deviation is 200 millimetres or less.
Velocity - The average velocity measured at 24 metres from the muzzle shall be approximately 926 metres per second.
Pressures - The average case mouth pressure shall not exceed 380 MPa (approximately 55,100 psi). The average peak port pressure shall not be less than 88 MPa (approximately 12,800 psi).
Muzzle Energy - 1716 joules.
Penetration - At a range of 570 metres, 80% of the bullets shall perforate (that is at least one bullet fragment shall pass completely through) a 10 gauge mild steel plate at 01 obliquity.
C78 Tracer
Projectile - The bullet is 27.6 mm (1.090 inch) long and weighs approximately 4.0 grams (61.7 grains). It has a cylindrical base and is covered with a gilding metal jacket having a milled cannelure. A second cannelure is added to facilitate identification during manufacture and prevent possible mixing with ball bullets and cartridges. The point of the bullet is filled with 98/2 lead/antimony weighing approximately 1.94 grams (30 grains). A charge of approximately 0.22 gram 3.4 grains) of IVI-1001 tracer composition, approximately 0.03 gram (0.5 grain) of I-280 sub-igniter composition and approximately 0.03 gram (0.5 grain) of I-136P igniter composition is pressed into the base and is retained in position by a gilding metal securing disc. The cartridge case is crimped into the cannelure on assembly.
Accuracy - When fired from a standard proof barrel at a range of 550 metres, all shots shall be in a group in which each horizontal and vertical standard deviation is 300 millimetres or less.
Velocity - The average velocity at 24 metres from the muzzle shall be 895 metres per second.
Muzzle Energy - 1649 joules.
Weight of Propellant - 1.62 grams (25 grains).
Weight of Bullet - 4.0 grams (61.7 grains).
Length of Bullet - 27.70 mm (1.090 inches).
C79, C79A1 Blank
C80, C80A1 Dummy
C83 High Pressure Testing
C163 Line Throwing Device
