Hrndy Spf 556nato 55gr Gmx 20/200

Hornady SPF 556 NATO 55gr GMX ammunition delivers consistent performance across a wide velocity range without the pressure penalties of conventional loads. The 55-grain GMX projectile—a solid copper monolithic bullet—produces reliable expansion and deep penetration, making this round suitable for training, hunting, and duty applications where barrier performance matters. Three thousand one hundred thirty feet per second muzzle velocity from standard 556 NATO chambers ensures predictable ballistics from rifle to rifle.

Hornady's Superformance technology uses progressive propellants that achieve velocity gains without generating excessive chamber pressure, recoil, or temperature sensitivity. The GMX bullet construction eliminates fouling typical of traditional lead-core designs, reducing cleaning intervals and maintaining bore condition over extended shooting sessions. Each 20-round box contains quality-controlled ammunition with consistent powder charges and primer seating, translating to reliable shot-to-shot performance downrange.

This ammunition suits carbine shooters and riflemen who demand accuracy without sacrificing terminal performance. Law enforcement, military personnel, and civilian operators running patrol rifles or competition platforms benefit from the monolithic bullet's ability to perform through intermediate barriers while maintaining accuracy at distance. The 55-grain weight balances velocity and energy retention in the 556 NATO cartridge, offering a proven balance for both short-range and extended-range engagements.