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Underwood Ammo

Underwood Ammo .22-250 Remington 38gr Controlled Chaos® Solid Monolithic Hunting & Self Defense Ammo Lead Free 20/box

Product Code : 816874023492

$1.95 per round

Mfg Item #: 460


  • SKU : 460
  • Cartridge : .22-250 Remington
  • Bullet Brand : Lehigh Defense™
  • Bullet Weight (gr) : 38
  • Bullet Construction : Solid Monolithic
  • Bullet Model : Controlled Chaos®
  • Bullet Material : Copper
  • Case Type : Nickel Plated Brass
  • Supressor Safe : Yes


  • Ballistic Coefficient (G1) : 0.200
  • Muzzle Energy (ft. lbs) : 1,489
  • Muzzle Velocity (fps) : 4,200
  • Sectional Density : 0.110

The development of this technology was the result of an animal control agency's request for a lead free bullet that would provide an extensive wound trauma with minimal pass through energy. Basically, the idea was to burst the bullet into numerous particles at a predetermined depth creating many wounds and a large temporary cavity at or near the central nervous system with proper shot placement. The agency had tried copper matrix frangible projectiles and found the penetration depth and particle size were less than what was required for proper terminal performance.The bullet is designed to penetrate to a specific depth and to fracture as the internal hydraulic pressure exceeds the hoop strength of the nose design. At the time of fracture, a massive energy spike is released as the particles break away and radiate outward from the initial trajectory path. This energy spike, and resulting temporary cavity, sends a shock wave through the animal's circulatory and nervous systems, immediately shutting down the functioning parts of these systems.

The Controlled Chaos technology differs from the Controlled Fracturing technology in that the fracturing particles are smaller, the penetration depth of the smaller particles is less, and the initial energy transfer is greater.

Determined at checkout.