Bullet Drop formula

ENG:
Does anyone know it, and how the gun and bullet's weight and mass affect it?

DEU:
Hat jemand weiß es, und wie die Waffe (oder Gewehr) und bullet das Gewicht und Masse beeinflusst?


(It's in DEU as Some use DEUTSCH for Weapon's and etc.)

I can understand both so either way it would be good to go.

This is not really german dude. (And I doubt that many ppl here know that DEUTSCH = GERMAN is. Thats only weird. Im german and i cant really understand these sentences o.O