5-8-3 Discharge of Firearms.
No person shall discharge any projectile from a firearm or gas or mechanically operated gun. For purposes of this section, any person who was the proximate cause of the discharge shall be deemed to have discharged the firearm or gun. It is a violation of this section if the discharge occurs within the jurisdiction of the city, or if the projectile travels over such jurisdiction.The above is applicable in the City of Boulder. If you are outside city limits there may be lesser or no resrictions on simply firing your weapon, but there surely is on shooting a mountain lion. I'll try to find some more info and get back to you.