Underwood 10MM 140 Grain Xtreme Penetrator Ammunition, 20 Rounds per Box

In the realm of personal defense and hunting, few cartridges stand as resolutely as the 10mm Auto. Underwood Ammo has crafted a round that exemplifies reliability and power, presenting an ideal solution for both hunters and those seeking self-defense assurance. This particular ammunition boasts a copper bullet, entirely lead-free, with a caliber diameter of 0.4 inches.

Weighing in at 140 grains, this projectile is engineered to leave the barrel at an impressive velocity of 1500 feet per second—well beyond the threshold of sound speed—making it supersonic by design. Its muzzle energy reaches a formidable 700-foot pounds, ensuring each shot delivers impactful force on target.

The construction includes Nickel Plated Brass casings which contribute not only to durability but also to smooth feeding and extraction from your firearm—a crucial aspect when reliability cannot be compromised.

With safety in mind for modern shooters who utilize suppressors, this ammunition is tested safe for such use. Furthermore, its sectional density stands at 0.125; this figure illustrates how effectively mass is distributed across its shape to penetrate targets efficiently—a detail important for understanding penetration capabilities.

For those keen on ballistics performance: although specific figures are absent here regarding ballistic coefficient (G1), generally speaking, higher coefficients indicate superior flight stability over longer distances.

Each box contains twenty rounds designed meticulously by Underwood Ammo to meet rigorous demands whether you're facing down game or defending what matters most.