Hornady Frontier Lead Pistol Bullets 45 cal. .454 255 gr. FP CowboyHornady lead pistol bullets are pre lubricated and cold swaged for total uniformity and balance. Our exclusive knurling system retains lubricant over the entire bearing surface to reduce leading in your barrel. For cowboy shooters, authenticity is a strict requirement. That's why we build our Cowboy bullets to SASS (Single Action Shooting Society) specifications while holding them to the same stringent production standards as all our products.