Product Features & Specifications

Underwood Ammo 420 223Rem 62gr Solid Monolithic 20 Per Box/10 Case

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.

Brand	Underwood Ammo
Caliber	223 Rem
Rounds Per Box	20
Casing Material	Nickel-Plated Brass
Muzzle Energy	1323 ft lbs
Muzzle Velocity	3100 fps
Application	Medium Game
Bullet Weight	62 gr
Coefficient	0.28
Gun Type	Rifle
Rating	Supersonic
Sectional Density	0.18
Boxes Per Case	10
SKU	186100
UPC	816874022693
MPN	420