[farming pharmer]

If there is no powder, where is the muzzle flash coming from? Super heated plasma?

[ImJustAnotherOkie]

The fireball is pyrotechnics for the benefit of politicians and upper management. /s/

[jpsb]

A projectile going thru the gun barrel at such high speeds vaporizes the surface of the barrel. So what you are seeing is the gun barrel being destroyed by firing. Not sure what the barrel life is on this gun put it can't be all that great.

All gun barrels have a limit on how many times they can be accurately fired.

I'm curious how quickly air resistance would reduce projectile speed down to that of a normal gun projectile.