Fort Scott Munitions TUI 5.56 NATO 55gr Solid Copper Ammo 20rd

The Fort Scott Munitions 556055SCV Tumble Upon Impact ammunition delivers devastating terminal performance through its innovative solid copper spun design. This 5.56x45mm NATO cartridge features a 55-grain projectile engineered to tumble upon impact, creating maximum tissue disruption and energy transfer. The solid copper construction ensures consistent expansion and weight retention across various target media.

What Makes This Different

Unlike traditional lead-core bullets that fragment unpredictably, the TUI design maintains structural integrity while creating controlled tumbling action. The solid copper spun construction eliminates lead fouling in barrels and provides superior accuracy potential. Independent ballistic testing shows the TUI projectile creates wound channels up to 40% larger than conventional FMJ rounds while maintaining deep penetration characteristics.

Key Features

• 55-grain solid copper spun projectile for maximum terminal effectiveness
• Tumble Upon Impact (TUI) design creates devastating wound channels
• Lead-free construction eliminates barrel fouling and environmental concerns
• Consistent 1:7 and 1:8 twist rate stabilization in standard AR-15 barrels
• Precision-manufactured brass cases for reliable feeding and extraction
• Temperature-stable powder loads for consistent velocities
• 20 rounds per box, 25 boxes per case (500 total rounds)

Field testing demonstrates reliable cycling in AR-15 platforms and bolt-action rifles chambered in 5.56 NATO or .223 Remington. The ammunition performs consistently in temperatures ranging from -20°F to 140°F, making it suitable for law enforcement, military applications, and hunting scenarios. Muzzle velocity averages 3,240 fps from 20-inch barrels, with excellent accuracy potential under 2 MOA in quality rifles.

Technical Specs

• Caliber: 5.56x45mm NATO (.223 Remington compatible)
• Bullet Weight: 55 grains
• Bullet Type: Solid copper spun, Tumble Upon Impact (TUI)
• Case Material: Brass
• Primer: Non-corrosive Boxer
• Muzzle Velocity: 3,240 fps (20" barrel)
• Packaging: 20 rounds per box, 25 boxes per case
• Manufacturer: Fort Scott Munitions, USA

This ammunition represents a significant advancement in terminal ballistics technology, combining the accuracy of match-grade components with devastating stopping power. The solid copper construction and precision manufacturing ensure consistent performance when reliability matters most.