Shooting Dynamics Features The philosophy behind the Pistol Shooting Dynamics Line is very simple: focus on the achievement of the ideal synergy between shooter firearm and ammunition. Fiocchi keeps developing and improving its pistol and revolver cartridge products. It encompasses LRN FMJ JHP FMJHP and JSP bullet configurations in all the most popular calibers. Shooting Dynamics Specifications Caliber: 40 S&W Model: Shooting Dynamics Bullet Weight: 180 gr Rounds Per Box: 50 Casing Material: Brass Application: Performance Protection Bullet Type: Full Metal Jacket Flat Nose (FMJFN) Muzzle Energy: 400 ft lbs Muzzle Velocity: 1000 fps