BoA gun for the Engineering Bullets [ITEM]Heavy Shot[/ITEM] its 1 more dps than the arrows you buy. so giving the weapon 1 more dps not to mention it has AP and crit, its a great choice, I also considered the arrow for the 1 hit rating, and more AP, so it depends on your play style
Yes I know I have venom equipped in my sig, currently getting the stone shards for the gun