Shooting Chrony chronographs measure the velocity of almost any projectile, including pellets, steel BBs, plastic and metal airsoft BBs, bullets, shotgun pellets and slugs, arrows, bolts, darts, paintballs and just about any other projectile. Shooting Chrony chronographs measure speed (feet per second and meters per second) from 30 fps to 7,000 fps with more than 99.5% accuracy.