Underwood Controlled Chaos .223 Remington 62-grain Solid ammunition (brand part no. 420) loads a lead-free, fragmenting bullet originally developed at the request of an animal control agency that needed extensive wound trauma with minimal pass-through energy. Underwood Ammo engineered the Controlled Chaos bullet to burst into numerous particles at a predetermined depth, creating many individual wound channels and a large temporary cavity with proper shot placement, an improvement over the copper matrix frangible projectiles the agency had tried before. That fragmentation behavior also limits pass-through energy, reducing the risk of overpenetration compared to a standard solid or hollow point bullet. This is rifle ammunition for .223 Rem/5.56 NATO shooters who want dramatic terminal performance with reduced overpenetration risk.
Key Specifications
- The caliber is .223 Rem/5.56 NATO, the standard AR-platform rifle chambering.
- The bullet weighs 62 grains and uses Underwood’s lead-free Controlled Chaos Solid design.
- The bullet bursts into numerous particles at a predetermined depth on impact.
- That fragmentation creates many individual wound channels and a large temporary cavity with proper shot placement.
- The design also delivers minimal pass-through energy, reducing overpenetration risk versus a standard bullet.
- The case is made of nickel-plated brass, resisting corrosion and standing out visually for quick reloads.
- Cost works out to about 1.95 dollars per round, in line with premium fragmenting defensive ammunition.
- Each box holds 20 rounds, a standard count for range or duty use.
- The loaded box ships at approximately 0.59 pounds, a useful reference for order planning.
Frequently Asked Questions
How does the Controlled Chaos bullet work? It bursts into numerous particles at a predetermined depth, creating many wound channels and a large temporary cavity with proper shot placement.
Does this bullet reduce overpenetration risk? Yes, its fragmentation behavior delivers minimal pass-through energy compared to a standard solid or hollow point bullet.
Is the case reloadable? The nickel-plated brass case is reloadable and resists corrosion for reliable long-term storage.
Buy Underwood Controlled Chaos 62gr Ammo
Controlled Chaos was built to solve a real problem with standard frangible projectiles, and the heavier 62-grain version brings that same technology to shooters who want a bit more bullet weight. Load up before your next range day or duty rotation. Order from our Lubbock, Texas gun shop and it ships fast to your door.
| Caliber/Gauge | .223 REM/5.56 NATO |
|---|---|
| Case Material | Nickel-Plated Brass |
| Cost per Round | 1.95 |
| Grains | 62 gr |
| Manufacturer | Underwood Ammo |
| Manufacturer Part Number | 420 |
| Shipping Weight | 0.59 |
| Units per Box | 20 |
| UPC | 816874022693 |







