Sierra Bullets has partnered with SIG Sauer to bring you the ultimate defense bullet line delivering optimal weight retention and expansion at all effective distances combined with Sierras world renowned accuracy. The line features a stacked hollow point bullet design with additional hollow point cavity. For the #9924" #9925" #9465 and #9820 a cannelure halfway up the shank locks the jacket to the core ensuring maximum weight retention and terminal expansion.Features :124 Grain JHP V-CrownCannelure to ensure maximum weight retention and terminal expansion.