Reversed bullet

A reversed bullet was a German anti-tank method for penetrating the armor of the British heavy tanks of World War I.

At their inception in 1916, the British Mark I tank proved nearly impenetrable to standard rifle fire.

The first attempt at boosting the power of German infantry rifles was the "reversed bullet".

[2] At short range, armor required a minimum thickness of one-half inch/12.7 mm in order to stop a reversed bullet.

[1] Later in World War I, the Germans developed the armor-piercing K bullet for use against heavier British tanks.