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armor piercing projectile

  1. T

    ID for AP 20(?)mm projectile

    Hey there, I recently found a rusty bullet that is little smaller than a normal 20mm AP one for Hispano or Oerlikon. See picture please. The diameter at the 'driving band' is approx 20mm, the body itself has a dia of approx 17mm. Overall lenght is 62mm. For comparison a standard .50 cal bullet...
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