Originally Posted by CameronWilson
Actually, it's the .177 pellet that experiences more drag, (it has a greater surface area in relation to its mass).
The example you gave was a .177 and a .22 of the same
mass. As I said, the .22 would have a greater frontal area (50% more) and therefore will drop more than the .177 even though it left the barrel at the same velocity.