Hornady 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. Classic and conventional design - traditional conical and flat designs have perfect symmetry when combined with knurling at the base of the bullet, which deliver increased stability and accuracy Classic and conventional design - this ensures proper positioning in authentic revolvers, with no unwanted nicking of primers as the cylinder turns Special knurling and grease ring - the knurling system holds an even distribution of lubricating wax over the bearing surface of the Cowboy bullet, resulting in less leading