SInce i sparked a high-jack ill start my own.

3-D
Im going for aLIGHT 3-D setup, im going to be pushing in the 325ish, range. Is heavier more accurate? More forgiving? I wanted a light arrow for the theory of "forgiving" in the sense of yardage. Is that good reasoning?

Hunting
And for hunting sitiuations, is heavier better? Moreforgiving?Hit them harder?, I really wouldnt have to worry about my yardage, i got the rangefinder. Would a heavy arrow be good for me?

Im trying to learn here. What would i gain/lose in each given situation.