Underwood 338 Lapua 300gr Hpbt - 10rd 10bx/cs

The Underwood 338 Lapua 300gr HPBT ammunition is purpose-built for precision rifle applications where extreme range, accuracy, and terminal performance are non-negotiable. This cartridge serves law enforcement tactical teams, military marksmen, and long-range hunters who demand consistent sub-MOA performance and reliable bullet expansion at extended distances. With a 300-grain Sierra MatchKing hollow point boat tail design, this round delivers the ballistic coefficient and weight retention necessary for engagements beyond 1,000 yards where wind deflection and bullet drop demand uncompromising ammunition quality.

The 338 Lapua Magnum round achieves a muzzle velocity of 2,700 feet per second, generating sufficient kinetic energy to maintain supersonic flight and stable bullet flight characteristics through variable atmospheric conditions. The Sierra MatchKing hollow point boat tail configuration minimizes drag through the transonic range and provides controlled expansion upon impact, critical for duty applications where over-penetration and collateral damage risk must be managed. Manufacturing quality ensures consistent primer ignition, uniform powder charges, and precise bullet seating—factors that separate match-grade ammunition from standard commercial loads and directly impact group consistency on target.

This ammunition benefits tactical operators fielding precision rifles chambered in 338 Lapua Magnum, including platforms such as the Accuracy International AXMC, Steyr HS .338, and Barrett M107A1 when chambered in this caliber. Precision shooters conducting load development or match preparation will appreciate the consistency that Underwood ammunition delivers across extended shooting sessions. Each box contains 10 rounds, with 10 boxes per case, making this a practical quantity for range testing, qualification courses, or staged duty rotation. Proper storage in a cool, dry environment preserves powder stability and primer reliability for extended shelf life.