You CANNOT use a guillotine for body shots. It wont do anything except cut some feathers. It might leave a bit of a bruise but you probably wont see a bird run/fly away from you faster. However for head shots there is nothing better. Personally I use the guillotine and love it. I dont have to worry about injuring a bird with a lousy body shot. It is easier that you would think to hit them in the head with the 125 gr head. If you cant get one with that then you really shouldnt be flinging arrows at live animals, the foam ones would be good though.