Name: Cartridge, 40 mm: L/60 AP-T
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Latin America and the Caribbean

Argentina

Brazil

Northern America

United States

Northern Europe

Finland

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Western Europe

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<h2>Armament</h2><p>All 40 mm L/60 Bofors Guns.</p><h2>Development</h2><p>The 40 mm L/60 AP-T round was originally developed just prior to or during the Second World War, providing the Bofors 40 mm L/60 anti-aircraft gun with a capability to defeat armoured land targets. It is still deployed to penetrate the protection carried by many modern strike aircraft and helicopters.</p><h2>Description</h2><p>The 40 mm L/60 AP-T round has the same ballistic properties as the 40 mm L/60 HE-T but does not carry explosive or fuze. The penetrator is made from forged hardened steel with a nose cap of cold rolled steel and it is provided with a copper drive band. The nose of the penetrator is covered by a thin steel windshield crimped onto the penetrator body, or joined to it by an adaptor to provide a smooth streamlined outline. The base of the penetrator is machined to accept a tracer element which burns for at least 4 seconds after firing. The cartridge case is crimped rigidly to the projectile by one or two 360º crimping bands; weapons using automatic feed systems or guns with increased rate of fire modifications should use double-crimped ammunition. The brass cartridge case, which can be reused several times if required, has a semi-rimmed base and is fitted with a percussion primer with a sinoxide detonator. Propellant loads vary from manufacturer to manufacturer, but the Bofors 40 mm L/60 AP-T uses approximately 320 g of NC 1066 single-base low-erosion propellant, producing a muzzle velocity of 860 m/s. As a further rough guide to other similar 40 mm L/60 AP-T rounds, the US M81 and M81A1 AP-T round cartridge case (the M25 or M25B1) contains approximately 295 g of M1 propellant. This produces a muzzle velocity of 875 m/s. On impact with the target the steel windshield crumples to allow the penetrator to pierce the target armour. The Bofors 40 mm L/60 AP-T can penetrate 40 mm of armour plate set at an angle of 60º at a distance of 100 to 150 m.</p><h2>Authorised fuzes</h2><p>None involved Equivalent rounds ARGENTINA</p><p>ARGENTINA</p><h2>Manufacturer</h2><p>Direccion General de Fabricaciones Militares</p><p>Type: 40 mm FMK 2 MOD 0 EJT</p><p>Description: Standard specifications</p><p>BELGIUM</p><h2>Manufacturer</h2><p>FN HERSTAL SA</p><p>Type: FN 110 AP-T</p><p>Description: Standard specifications. No longer in production but may be retained in service</p><p>BRAZIL</p><h2>Manufacturer</h2><p>FI Indústria e Comércio Ltda</p><p>Type: AP-T</p><p>Description: Standard specifications</p><p>FINLAND</p><h2>Manufacturer</h2><p>Patria Vammas Oy</p><p>Type: AP-T</p><p>Description: Standard specifications. Cartridge cases made by OY Hackman AB</p><p>FRANCE</p><h2>Manufacturer</h2><p>Giat Industries</p><p>Type: AP-T</p><p>Description: Projectile weight 888 g. Muzzle velocity approximately 880 m/s</p><p>GERMANY</p><h2>Manufacturer</h2><p>Diehl-Wehrtechnik</p><p>Type: AP-T</p><p>Description: Standard specifications</p><p>GREECE</p><h2>Manufacturer</h2><p>PYRKAL: Greek Powder & Cartridge Company</p><p>Type: AP-T</p><p>Description: Standard specifications</p><p>SWEDEN</p><h2>Manufacturer</h2><p>Bofors AB</p><p>Type: L/60 AP-T</p><p>Description: No longer in production. Standard specifications, see text</p><p>UNITED STATES OF AMERICA</p><h2>Manufacturer</h2><p>Government arsenals</p><p>Type: AP-T M81 and M81A2 Description: No longer in production but may be widely encountered. Complete round weight is 2.08 kg and length 447 mm. MV 875 m/s</p><p>YUGOSLAVIA , FEDERAL REPUBLIC</p><h2>Manufacturer</h2><p>Yugoimport SDPR</p><p>Type: AP-T</p><p>Description: May no longer be in production. Standard specifications</p>

The 40 mm L/60 AP-T round has the same ballistic properties as the 40 mm L/60 HE-T but does not carry explosive or fuze. The penetrator is made from forged hardened steel with a nose cap of cold rolled steel and it is provided with a copper drive band. The nose of the penetrator is covered by a thin steel windshield crimped onto the penetrator body, or joined to it by an adaptor to provide a smooth streamlined outline. The base of the penetrator is machined to accept a tracer element which burns for at least 4 seconds after firing. The cartridge case is crimped rigidly to the projectile by one or two 360º crimping bands; weapons using automatic feed systems or guns with increased rate of fire modifications should use double-crimped ammunition.

The brass cartridge case, which can be reused several times if required, has a semi-rimmed base and is fitted with a percussion primer with a sinoxide detonator. Propellant loads vary from manufacturer to manufacturer, but the Bofors 40 mm L/60 AP-T uses approximately 320 g of NC 1066 single-base low-erosion propellant, producing a muzzle velocity of 860 m/s. As a further rough guide to other similar 40 mm L/60 AP-T rounds, the US M81 and M81A1 AP-T round cartridge case (the M25 or M25B1) contains approximately 295 g of M1 propellant. This produces a muzzle velocity of 875 m/s. On impact with the target the steel windshield crumples to allow the penetrator to pierce the target armour. The Bofors 40 mm L/60 AP-T can penetrate 40 mm of armour plate set at an angle of 60º at a distance of 100 to 150 m. The 40 mm L/60 AP-T round was originally developed just prior to or during the Second World War, providing the Bofors 40 mm L/60 anti-aircraft gun with a capability to defeat armoured land targets. It is still deployed to penetrate the protection carried by many modern strike aircraft and helicopters. Applications include all 40 mm L/60 Bofors Guns.

Cartridge, 40 mm: L/60 AP-T

Cartridge, 40 mm: L/60 AP-T

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