Fiocchi’s Range Dynamics is ideal for practicing for your next competition or headed to a training course to develop your skills. Featuring a 62-gain FMJ bullet, this subsonic cartridge offers reduced recoil impulse and sound signature, making it the go-to for suppressed or unsuppressed shooting and general plinking. Fiocchi’s Range Dynamics is ideal for practicing for your next competition or headed to a training course to develop your skills.