The bullet for the 30x173 Avenger has an aluminum jacket around a spent uranium core and weighs 6560 grains (yes, over 100 times as heavy as the M16 bullet, and flies through the air at 3500 fps (which is faster than the M16 as well).
My God, a projectile that is just south of a pound, moving at 3500 feet per second. 178,427 foot pounds of energy / 242,661 joules. I guess if I have to be shot, I want to get hit with one of those as there would be no pain, nor a need for a burial. I know Anzio Iron Works makes a 20mm rifle, I wonder if they’d be willing to commission one of those puppies?
Hat tip The Puppy Blender