Hsm Ammunition Hsm 22 Arc 55gr V-max 20rd 25bx/cs. This HSM Ammunition Ammunition features bullets that deliver strong stopping power perfect precision and predictability. With amazing deals every day on Ammunition and other top-tier rifle ammo from trusted brands like HSM Ammunition you re sure to find the ideal cartridge for your field or range use. Stock up today to save big on ammunition and other top-tier tactical hunting and outdoor gear at OpticsPlanet. Specifications for Hsm Ammunition Hsm 22 Arc 55gr V-max 20rd 25bx/cs: Manufacturer: HSM Ammunition Caliber: .22 ARC (Advanced Rifle Cartridge) Number of Rounds: 20 Bullet Weight: 55 grain Bullet Tip Material: Polymer Package Contents: Hsm Ammunition Hsm 22 Arc 55gr V-max 20rd 25bx/cs