The Underwood Ammo Controlled Chaos .223 Rem load pairs a 55-grain solid projectile with a high listed velocity to deliver controlled fragmentation and energy transfer at a predetermined depth. It is described for applications such as varmint hunting, animal culling, fur hunting, and personal defense where rapid energy transfer and controlled terminal performance are desired. The cartridge uses nickel-plated brass cases, boxer primers, and flash-suppressed powder for enhanced feeding, corrosion resistance, and reduced visible muzzle flash.
Key Specifications
- This cartridge is chambered in .223 Rem.
- The projectile weighs 55 grains.
- The listed muzzle velocity is approximately 3250 fps.
- Each box contains 20 rounds.
- The projectile design is listed as Solid (Controlled Chaos).
- Cases are finished as nickel-plated brass.
- Priming and case prep is boxer primed and reloadable.
- Powder is described as flash suppressed to reduce visible muzzle flash.
- This ammunition is described as new production non-corrosive.
Field-tested in real-world conditions, this Underwood Ammo Controlled Chaos load is built to perform reliably in common modern platforms while offering the terminal characteristics the design targets. The nickel-plated cases aid feeding and long-term storage, and the flash-suppressed load signature helps preserve shooter sight picture in low-light scenarios. For users who need a .223 Rem option focused on controlled fragmentation and dependable function, this round delivers a practical balance of performance and usability.
