From Creeping Death...

"hey Ern just an update.we started on the kingtiger first. the gun is able to blow a clean hole in the bottom of a coke can. the crono that we are using is having some tech issues but our last reading put it at 440 fps. we'll be working on the mounting today.

the reason we can get more power out of the kingtiger is because it has more space. so the more space we can use a larger volume of gas. it decreases the amount of times you can fire without reloading, but this thing is shaping up to be a living breathing king of the battlefield. the paintball testing is leaving incredible burst splatters on whatever it hits."