Seems like it would need to be fired from a smoothbore barrel. A normal twist rate of 1 in 14” will spin the 3000fps bullet at 154,000 rpm. Seems like any kind of fins or jets or whatever they have in mind for steering would have to overcome that spin rate to work.
True. I had envisioned a sabot type round: outer case to handle the rifled barrel then little winglets popping out when the casing falls away. A 50 would be about the smallest calibre that I cn see being suitable. I’d think for the sake of cost, and flexibility, you’d want to still have a rifled barrel to handle regular ball ammo.
I’m stuck on guidance though. Electronics to be sure, but IR/LASER, RF slaved to the scope?
Oh a thought. What about a hollow point type design only with tunnels running to four ports at the back and a little mechanism of some sort to open and close the ports to affect the desired trajectory.
Seems more like a small guided missile.