/ tnt
type=entity,ID=lucky:lucky_projectile,pos=#bowPos,NBTTag=(Motion=#bowMotion,item=(id=tnt),trail=(frequency=0.2,drops=["type=particle,ID=smoke,posY=#bExactPosY+0.4"]),impact=["group(type=difficulty,ID=hard;type=explosion,damage=4)"])@luck=2@chance=200

/ arrow
type=entity,ID=arrow,pos=#bowPos,NBTTag=(Motion=#bowMotion,Color=-1)@chance=0.5