Last reviewed: 2026-04-19 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
For varmint hunters running 300 AAC Blackout platforms, the Underwood 110-grain Nosler Varmageddon delivers supersonic velocities and rapid fragmentation on contact. This 300 AAC Blackout ammo pairs a flat-base polymer-tip bullet with nickel-plated brass and flash-suppressed powder—engineered for consistent cycling in semi-automatic carbines and precision from bolt-action rigs. Underwood sources Nosler’s Varmageddon projectile, a lead-core design optimized for explosive expansion on coyotes, prairie dogs, and groundhogs at ranges from contact to 200 yards.
Built for the Box
Underwood manufactures this cartridge with new-production nickel-plated brass cases and non-corrosive Boxer primers. The 110-grain Nosler Varmageddon features a polymer tip that resists deformation in the magazine and drives hydraulic expansion on impact. At 2400 feet per second muzzle velocity, the round generates 1407 foot-pounds of energy—well above the supersonic threshold for flat trajectory and minimal wind drift inside 150 yards. The G1 ballistic coefficient of 0.293 and sectional density of 0.166 reflect the bullet’s light-for-caliber design, prioritizing rapid expansion over deep penetration. Underwood hand-inspects each lot and tests live fire in suppressed and unsuppressed barrels to verify function and accuracy.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 300 AAC Blackout (7.62x35mm) |
| Bullet weight | 110 grains |
| Bullet type | Nosler Varmageddon polymer tip |
| Muzzle velocity | 2400 fps |
| Muzzle energy | 1407 ft-lbs |
| G1 ballistic coefficient | 0.293 |
| Sectional density | 0.166 |
| Velocity rating | Supersonic |
| Rounds per box | 20 |
| Case | Nickel-plated brass |
| Primer | Boxer, non-corrosive |
| Reloadable | Yes |
| Lead-free | No |
| Intended use | Hunting (varmint/predator) |
| Manufacturer | Underwood Ammo |
| Country of origin | United States |
Nickel plating resists tarnish and corrosion during extended storage in leather belts or humid environments, and the flash-suppressed powder formula minimizes muzzle signature in dawn or dusk shooting scenarios. This load cycles reliably in DI and piston AR-15 platforms chambered in 300 Blackout, and the flat-base bullet design seats consistently for handloaders who wish to repurpose the brass. Browse our full selection of 300 Blackout ammo for subsonic and barrier-blind alternatives.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Observe the four universal rules of firearm safety at all times — treat every firearm as loaded, never point at anything you are not willing to destroy, keep your finger off the trigger until ready to fire, and identify your target and what lies beyond it.
- Verify current federal, state, and local laws governing ammunition purchase, possession, and use in your jurisdiction before ordering.
- This ammunition contains lead. Wash hands thoroughly after handling. Pregnant women and children should avoid exposure. See California Proposition 65 for additional information.
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