CO Dems Propose Legislation To Ban Shotguns CBS Local Denver4: A pump or semi-automatic shotgun is the gun most hunters in Colorado use. It’s a gun state Sen. Greg Brophy, R-Wray, says could be banned under a bill that’s already passed the House and Gov. John Hickenlooper says he’ll sign. “They’re coming after the standard shotgun,” Brophy told CBS4 Political Specialist Shaun Boyd. Brophy says if Democrats succeed in passing a bill limiting large capacity magazines in Colorado, they’ll outlaw the most popular selling firearm for hunting.