Crossbows are affected by power draw in a few different ways. The first is that the heavier the crossbow, the more difficult it is to cock and hold at full draw. This can lead to reduced accuracy as your muscles tire over the course of aiming. The second way power draw affects crossbows is with shorter bows; when you shorten the bow's length, you also increase its poundage (or force needed to cock it). This makes shorter bows much harder to cock and can cause them to be less accurate as well. Finally, crossbows with lower power draws tend to be faster, meaning they can shoot their arrows at higher speeds and with more kinetic energy than those with higher power draws. This can make them more effective for hunting or self-defense purposes.