Hornady Varmint Express, 17 Hornady Mach 2, 17 Grain, V-Max, 50 Round Box 83177 From prairie dogs to coyote and fox, the Hornady Rimfire line of ammunition offers varmint hunters high speed rimfire cartridges. Loaded with either the V-MAX or NTX bullet, these loads deliver tack-driving accuracy and dramatic expansion on impact.