The Winchester Super-X WC401 brings dependable Winchester ammo performance to shooters who demand consistent 40 S&W ballistics for range work and defensive training, featuring a 165 gr Winclean Brass Enclosed Base bullet that delivers a 1130 fps muzzle velocity and roughly 468 ft?lbs of energy for reliable terminal performance and consistent recoil impulse. As part of the Super-X series, this load is built for smooth feeding and reliable extraction in semi?automatic pistols thanks to brass casing and an enclosed base profile that helps maintain uniform pressure and accuracy during repeated strings of fire, making it a practical choice for target shooting and skills development where shot-to-shot consistency matters. The cartridge weight and velocity balance controllable recoil with sufficient energy for defensive scenarios while the Winclean bullet design reduces barrel fouling for easier upkeep after range sessions. If youre stocking up for regular practice, training classes, or maintaining a duty-ready inventory, the Winchester Super-X 40 S&W 165gr combines trusted brand reputation with shooting-focused attributes that range officers, instructors, and serious recreational shooters list among reliable training and carry-compatible options.