The Federal American Eagle 5.7x28mm 40 Grain FMJ Ammunition (AE5728A) is a popular choice for high-volume target practice and range training, offering ballistics that closely mimic premium self-defense loads. It is specifically engineered to provide consistent accuracy and smooth feeding in popular firearms like the FN Five-seveN and the Ruger-57. 
Product Features & Specifications
Performance Metrics: Boasts a muzzle velocity of 1,655 FPS and muzzle energy of 243 ft-lbs.
Bullet Design: Features a 40-grain Full Metal Jacket (FMJ) or Total Metal Jacket (TMJ) projectile. The TMJ variant completely encases the lead core, which reduces airborne lead exposure—making it ideal for indoor shooting ranges.
Reliable Components: Built with reloadable brass cases and Boxer primers to ensure dependable ignition and consistent cycling.
High-Volume Training: Designed as an affordable alternative for tactical training and recreational plinking without sacrificing the "feel" of professional-grade loads.