it military ammo and it going to be along time before that shows up in the civilain market place
Shooting from underwater? I'd be more worried about the gun than the ammo.
That reduces friction where the water would have normally touched the bullet. But there's the drag incurred by pushing the weight of the water aside. That's what has me curious.I think the idea is that the bullet only 'sees' a very tiny cross-section of the water it travels through; that being the cross-section of the very tip of the bullet where it meets and cavitates the water. The rest of the bullet experiences very minimal resistance at it travels in the cavity.