The CCI Big 4 Shotshell Pistol Ammo 45 Colt #4 Shot is a centerfire handgun shotshell in the Big 4 series that brings greater range and terminal energy to handgun pest control and close-range hunting, using a 140 gr No. 4 lead shot payload seated in an aluminum casing for reliable feeding and extraction in single-action and revolver platforms chambered for .45 Colt; with a muzzle velocity around 800 fps and roughly 199 ft-lbs of energy, these loads pattern tighter and retain more knockdown power than conventional shotshell handloads, making them highly useful for coyotes, foxes, raccoons and other mid-sized pests out to extended distances, while the copper and grey cartridge appearance eases identification in a range bag. Talk through a scenario at the farm or during a property sweep and youll appreciate how the Big 4 series lets a handgun deliver effective shot patterns without the bulk of full-size shotgun ammo, and because they originate from the United States, many shooters trust the performance and availability; CCIs reputation and the Big 4 designation help hunters and ranchers choose a load engineered for handgun shotgun-type applications.