an idea for a non falling bullet, has been made?

[White Owl]

Don't most of these guns in WWII fighters fire supersonic rounds? I think they do... but I know almost nothing about ballistics and machine gun technology and all that kind of stuff so I'm probably wrong.

Anyway, if they're supersonic then that adds a whole new level of complication to your plan, because the effects of supersonic aerodynamics can be unusual and unintuitive. And of course you need to figure out how to keep your bullet stable as it decelerates from supersonic to subsonic speeds.

It's probably a better idea to stick to good old-fashioned rifling while we wait for our awesome fat laza beamz.

[AndyJWest]

I think you are probably right, White Owl - I can't see how the Magnus effect could work at supersonic speeds.

[VO101_Tom]

Guys. The Magnus effect arises then, if the spin axis is perpendicular onto the motion vector (wind vector). The firearms bullet spin axis is parallel. Not the same!

The paintball, airsoft bullet twirls around the cross axis, not around the longitudinal axis. There is a Magnus effect because of this. Anyway, compared to the velocity, the spin much faster (looking at his proportions) than at the firearms.

[AndyJWest]

Raaaid is explicitly talking about a bullet spinning on an axis perpendicular to its motion.