Underwood Ammo 40 S&W 155 Grain Jacketed Hollow Point ammunition delivers exceptional performance with 1300 FPS muzzle velocity and 582 ft lbs of muzzle energy for superior stopping power.Underwood Ammo 40 S&W 155 Grain Jacketed Hollow Point20 rounds per box1300 FPS muzzle velocity for flat trajectory582 ft lbs muzzle energy for maximum impactNickel-plated brass casings for reliable feeding and extractionJacketed Hollow Point design for controlled expansionIdeal for self-defense and tactical applications this premium ammunition combines Underwood's renowned quality with proven JHP performance for reliable protection.