I'm thinking about casting some lead ammo, i've been looking pics of some ancient sling ammo and i've seen lemmon-like shape and even some flattened lemmon-like shapes, but not a proper almond like (I think almond shape is sort of a flattened drop)
What do you think about this flattened drop-like shape? any advantage over a flattened lemmon shape? lemmon is simetric... and i won't care how i place it in the sling pouch, but i'll have to care about how i place a drop-like shape cause it's asymetric .... How i make the wide end fly forward?
Would it be  a better shape a revolving drop such like oak acorns or a flattened one? any ideas?

If I have to fire any non-rock materials, I prefer to fire truly biconical shot, which sort of looks like two rounded equilateral triangles pressed base to base, and I find that if I sling it slightly sidearm, but still forcibly forwrds, I can sometimes get it to impact the ground point down. Most of the time, no matter how it hits, it seems to hit pretty hard, and seems quite accurate. I make mine out of clay, though, so my results could be different from those made from lead.

Thanks a lot for moving this topic to the right place 

when i think of which end would fly first, i think the fat end, figure if you drop that same gland off a building point first, wouldnt the fatter end be forced down? hmm, experiment?

You're right.  Generally, such efforts are a needless burden for our sport.  I could see the relevance if the sport were much more widespread.

Virtual 3D windtunnel software would be fun to play with, however the manufacturing and testing of real ammo is even more fun!

It has been my observation that after enough real experience,  the subconscious mind can make for quite a serviceable virtual 3D wind tunnel in itself.

Besides,  I doubt one could manage to reasonably obtain software that could accurately resolve the information provided by even a moderately complex 3D shape spinning at 8,000RPM.