Hornady® Varmint Express™ .17 HMR 17gr V-Max® ammo is a performance-enhanced varmint hunting round, featuring high-quality components and premium V-Max® bullets for superior penetration and reliable expansion for maximum stopping power on small game. Plus, this rimfire hunting rifle ammo comes equipped with clean-burning powders and propellants, loaded in select brass casings for smooth performance in most bolt-action and semi-auto varmint hunting rifle.