A taser can shoot up to 20 feet ...info from slate article Tasers can shoot someone from 20 feet away. Once the electrodes hit their target, the Taser sends a pulse with about 50,000 volts and a few milliamps. On its standard setting, the pulse cycles for five seconds before shutting off. How far is this and who is bringing a tape measure in a situation where you and/or partner have already been pummeled by the guy..You dont know if your partner is incapacitated and if this tazer knocks you out then man who has already demonstrated violence COULD have free reign over you.