Federal P357XB1 Premium 357 Mag 140gr Barnes Expander BRX Ammo

The Federal P357XB1 Premium delivers exceptional terminal performance through its 140-grain Barnes Expander BRX bullet design. This premium hunting ammunition combines Federal's precision manufacturing with Barnes' proven solid copper construction for reliable expansion and deep penetration.

What Makes This Different

The Barnes Expander BRX bullet features a solid copper construction with pre-scored petals that expand to nearly twice the original diameter upon impact. Unlike traditional lead-core bullets that can fragment, the monolithic copper design retains 99% of its weight while creating devastating wound channels. Federal's Premium line ensures consistent powder charges and precise bullet seating for shot-to-shot accuracy.

Key Features

• 140-grain Barnes Expander BRX solid copper bullet for maximum weight retention
• Pre-scored expansion petals create controlled mushrooming at velocities down to 1,600 fps
• Lead-free construction meets all hunting regulations and reduces environmental impact
• Federal Premium brass cases with consistent wall thickness for reliable feeding
• Optimized powder charge delivers 1,360 fps muzzle velocity from 4-inch barrels
• 20 rounds per box with 10 boxes per case for serious hunters
• Compatible with all .357 Magnum revolvers and lever-action rifles

Field testing demonstrates consistent 1.5-inch groups at 50 yards from quality revolvers, making this load suitable for medium game hunting out to 100 yards. The Barnes Expander performs exceptionally on deer-sized game, delivering clean, ethical kills with proper shot placement. Law enforcement agencies have adopted this load for duty use where over-penetration concerns exist, as the expanding copper bullet transfers energy efficiently while reducing pass-through risks.

Technical Specs

• Caliber: .357 Magnum
• Bullet Weight: 140 grains
• Bullet Type: Barnes Expander BRX solid copper hollow point
• Muzzle Velocity: 1,360 fps (4-inch barrel)
• Muzzle Energy: 575 ft-lbs
• Case Material: Federal Premium brass
• Primer: Non-corrosive, non-mercuric
• Packaging: 20 rounds per box, 10 boxes per case
• Country of Origin: United States

This premium ammunition represents Federal's commitment to precision manufacturing and Barnes' expertise in monolithic bullet design. Hunters demanding consistent accuracy and reliable terminal performance choose this combination for its proven field results and environmental responsibility.