HSM Game King 300 AAC Blackout 125gr PH Rifle Ammo - 20 Rounds - HSM has developed an entire lineup of fine hunting ammunition featuring the time-honored Sierra Pro-Hunter bullets. Each caliber's individual components have been precisely matched to each Pro-Hunter bullet to maximize their potential for accuracy and performance. So precisely matched that you may think HSM Game Kings are handloads rather than coming out of a factory box. Whatever your quarry, HSM has a Game King cartridge for you.