American army Gustav line - 3 grenade APC perforating anti-tank rounds of 57 mm - Military equipment

They are iron bullets without hazardous or explosive substances.
Condition: See photos, which are part of the description.


The American 57 mm anti-tank shell was actually the projectile for the 57 mm M1 Anti-Tank Gun, developed from the British 6-pounder model. The 2.85 kg projectile had a muzzle velocity of 900 m/s and was used throughout the war, although by the end of 1943 it began to be replaced by the 17-pounder.
Type of weapon: It was mainly a piece of artillery towed and mounted on various vehicles, both American and British. It was not a 'grenade' in the sense of a hand-held weapon, but a projectile fired from a cannon.
Features
A cannon had a caliber of 57 mm and a firing rate of about 25 rounds per minute.
The weight of the projectile was 2.85 kg and its muzzle velocity was 900 m/s.
Penetration varied depending on the distances, but the weapon was effective against armored vehicles of the era.