SK's High Velocity .22 Long Rifle Ammunition was designed for the discerning rimfire enthusiasts who demand speed and accuracy. These cartridges exit the muzzle at a blistering 1263 fps, which is nearly 200 fps faster than the average .22lr which is just 1070 fps. The round-nose, 40 grain projectiles get their high velocities from SK's proprietary blend of high-powered, clean burning propellent. These cartridges are available in 500 and 5000 count boxes and reliable in nearly every .22lr platform. SK Ammunition .22 LR High Velocity Match 40gr Ammunition Brick of 500rds 420237