Speer Grand Slam .257 120 Grain Soft Point Rifle Bullet 50. On impact internal jacket flutes allow consistent expansion yet the bullet retains most of its weight for deep penetration every time. Specifications for Speer Grand Slam .257 120 Grain Soft Point Rifle Bullet: Manufacturer: Speer Bullet Type: Soft Point (SP) Bullet Weight: 120 grain Projectile Caliber: .257 Caliber Bullet Quantity: 50 Bullet Features of Speer Grand Slam .257 120 Grain Soft Point Rifle Bullet A tapered precision-drawn jacket Internal jacket flutes Long nose profile for flatter trajectories Exceptional accuracy Package Contents: Speer Grand Slam .257 120 Grain Soft Point Rifle Bullet Speer 1415: Grand Slam .257 120 Grain Soft Point Rifle Bullet 50