The problem with any of these designs is that the volume is too small to get high FPE, even with a dump valve.... I get it that nobody cares about the efficiency.... and the idea of using a very small caliber will certainly help.... but the Inovairtech MAC was a bust (I believe the company is gone now)….
Having said that, if you have any details about the volume inside the cartridge and how that compares to the barrel volume.... I'm prepared to listen.... I'm also curious about the use of a jacketed bullet on air.... AFAIK it has never been done successfully except by sabot.... Is it the intention to launch the plastic sabot with it, and if so, how do you keep it straight in the bore?....
I was really hoping for that revolver pistol they where supposed to be developing .
the ft lbs for a given amount air is bound to be significantly higher.
It is possible I misunderstood you...