Heavier BBs are really part of getting hits called. I personally don't like getting shot with .2g since they don't produce any sound or sensation past 20m or so. Then again I also would prefer than people range at most low-caps and semi-only, so I'm a weird one perhaps.
Making hits count:
Good heavy ammo
Know your maximum point-blank distance (where BB travels level)
For goodness sake don't just stand at either end of an open area then try to lob BBs at each other. Flank em and get your hits at a range they can feel.