Aimo Lahti’s 109-pound semi-automatic rifle on skis made to assassinate tanks.
Using the Swiss 20×138mmB Solothurn Long cartridge, the L39 was
readily capable of piercing 20mm of armor at 100-meters and 16mm out to
500m with enough pop to put most of the Soviet tanks of the pre-WWII
era on the menu. With an 1800-grain armor piercing high explosive bullet
moving at 3000fps, it generated 35,543ft/lbs of energy at the muzzle.
When you keep in mind that the .50 caliber BMG round popular in the
Barrett rifle and M2 “Ma Deuce” brings 13,910 ft. /lbs of energy with a
660-grain bullet, you can see just how brutal this round was.
Brutal? Watch the video:
That looks like fun. :)