Barnes Pioneer 357 Magnum 180gr XPB Bullets - 20 Round Box

The Barnes Pioneer 357 Magnum 180 grain XPB bullets deliver exceptional terminal performance through proven all-copper construction and precision engineering. These lead-free projectiles expand reliably across a wide velocity range while maintaining deep penetration characteristics that traditional jacketed bullets cannot match.

What Makes This Different

Unlike conventional lead-core bullets, the XPB (X-Pistol Bullet) features a solid copper body with four razor-sharp petals that open to double the original diameter upon impact. This monolithic design eliminates core separation issues while achieving 99% weight retention. The polymer tip initiates expansion at velocities as low as 1050 fps, making it effective across the full spectrum of 357 Magnum loadings.

Key Features

• Solid copper construction with no lead core for consistent performance
• Four-petal expansion design doubles diameter for maximum wound channel
• Polymer tip ensures reliable expansion at low and high velocities
• 99% weight retention prevents fragmentation and over-penetration
• Precision-machined driving bands reduce barrel fouling
• Lead-free design complies with non-toxic ammunition regulations
• Flat base design optimized for revolver chambers

Field testing demonstrates consistent expansion and penetration in both tissue and barrier materials. The XPB bullets perform effectively in hunting applications from whitetail deer to wild hogs, while also serving duty and self-defense roles where barrier penetration and terminal performance are critical. The copper construction maintains accuracy across temperature extremes and shows minimal velocity degradation compared to lead-core alternatives.

Technical Specs

• Caliber: 357 Magnum (.357")
• Bullet Weight: 180 grains
• Construction: Solid copper with polymer tip
• Bullet Type: XPB (X-Pistol Bullet)
• Base Design: Flat base
• Quantity: 20 bullets per box
• Case Quantity: 10 boxes per case (200 total bullets)
• Manufacturer: Barnes Bullets
• Model Number: 32140
• UPC: 716876143573

The Barnes Pioneer XPB represents decades of bullet engineering focused on reliable terminal performance. Professional shooters and hunters choose these bullets when consistent expansion and deep penetration cannot be compromised, making them an investment in proven ballistic technology.