Modeled after the legendary xtp bullet design, hap (hornady action pistol) bullets are further refined into the perfect competition projectile.While xtp bullets use folds and a cannelure to aid in controlled expansion and terminal performance, hornady has eliminated these from hap bullets leaving only a sleek and balanced projectile with a protected nose that aids in consistent and reliable feeding in autos.Coefficient: .164Bullet Type: Hollow PointBullet Diameter: .400Weight: 180 grBullet Caliber: 10mmJacket Material: CopperBullet Coating: CopperCore Material: LeadCannelure: NoSectional Density: .161Quantity: 500 Per Box