Even on the off chance it doesn't misfire or explode, look at that barrel length compared to the round itself. That's not going to get you a lot of velocity. At most it'd be comparable to a .308 round, or 8mm Mauser at most.
Absolutely not. I remember Brandon Herrera doing a video on this particular gun, and it's anybody's guess as to whether it would even function, let alone without breaking your shoulder. You see, he speculated that it was an open-bolt design, which would put the bolt alone at like 50-80 pounds, and with that rapidly going back and forth, that would cause an ungodly amount of recoil. On top of that, considering how short that barrel is for .50 BMG, it'd hit with all the force of a roundhouse kick from Lt. Dan.
