[VOA]

Also, seeing how the outline of the round is sort of a slender triangle, it could
be that a curved (banana) clip is just the most natural and space-efficient
way to stack a bunch of the rounds.

[rjp2005]

Thanks - yeah I see how their shape fits into a curve.

Btw - what do you guys think of the F-2000? Looks like a sick weapon.
http://www.fnhusa.com/contents/tw_f2000.htm

[rawcatslyentist]

"Also, seeing how the outline of the round is sort of a slender triangle, it could be that a curved (banana) clip is just the most natural and space-efficient way to stack a bunch of the rounds."

Natural, space efficient, and functionally efficient also. With little to no space between the "tips", there is little to no room for unwanted ammo jams! (Not like you would ever want an ammo jam in the first place though.)