Hornady Lead Pistol Bullets 38 Cal .358 158 Gr Swc/HpTraditional conical and flat designs have perfect symmetry when combined with knurling at the base of the bullet, which deliver increased stability and accuracy. This ensures proper positioning in authentic revolvers, with no unwanted nicking of primers as the cylinder turns.The knurling system holds an even distribution of lubricating wax over the bearing surface of the Cowboy™ bullet, resulting in less leading.