Barnes Pio 357mag 140gr Tsxfn 20/200

Barnes Pioneer 357 Magnum 140 grain TSX hollow point ammunition is purpose-built for lever-action rifles and revolvers where traditional ammunition compromises either expansion or penetration. Law enforcement and hunters have long struggled with finding premium 357 Magnum loads that reliably perform on game and defensive targets—Barnes Pioneer ammunition solves this by delivering consistent terminal performance in a compact, efficient package designed for the unique ballistic environment of shorter barrel platforms.

The 140-grain TSX (Tipped Solid Copper eXpanding) projectile uses Barnes' proprietary solid copper construction, eliminating lead core separation and ensuring near 100% weight retention through intermediate barriers. The polymer tip initiates expansion immediately upon impact while the precision-engineered grooves control expansion geometry for maximum energy transfer without over-fragmentation. This design achieves deep, straight-line penetration paired with massive wound cavitation—critical for tactical and hunting applications where over-penetration or bullet failure can compromise performance. Each round is carefully loaded to optimize pressure curves for lever guns and revolvers, ensuring reliability across different platform barrel lengths.

Operators, hunters, and sport shooters using modern lever-action rifles and magnum revolvers will benefit most from this ammunition's engineered terminal ballistics and consistent loading. The 20-round box format is ideal for practice, training rotation, and duty use without excessive bulk. Compatibility spans Winchester 1894 variants, Marlin centerfire levers, and major-brand magnum revolvers including Ruger, Smith & Wesson, and Taurus platforms. Store ammunition in a cool, dry location and inspect cases before use to maintain performance reliability across seasons.