X-Treme 10/40 (.400) 180 Gr RNFP Bullet (not ammo) Rifle 300 AAC Blackout Average Velocity: 925 Feet Per

Average Velocity: 925 Feet Per Second (FPS) Tested Barrel Length: 16 inches

continuing the Winchester tradition of legendary excellence with unparalleled target-breaking performance that revolutionized the target shooting and reloading industry

The shell is designed to provide consistent and effective performance at an affordable price

These rounds are carefully checked during manufacturing

X-Treme Bullets Copper Plated projectiles are re-struck to ensure our diameters are precise and consistent from bullet to bullet and lot to lot

X-Treme 10/40 (.400) 180 Gr RNFP Bullet (not ammo) Rifle 300 AAC Blackout Average Velocity: 925 Feet PerOur 10 40 180 grain RNFP bullets strike a balance of weight and performance, offering reliable feeding and accuracy across pistols and carbines. The flat nose enhances impact performance, making them ideal for both practice and field use.