Underwood Ammo .40 S&W Subsonic Ammunition
In the realm of personal defense and hunting, precision and reliability are paramount. Underwood Ammo has crafted a formidable option for those who demand excellence from their ammunition: the .40 S&W Subsonic round.
This new production ammunition is designed with non-corrosive Boxer primed reloadable brass cases, ensuring longevity and ease of use for avid shooters. The nickel-plated brass casing enhances durability while providing smooth feeding through your firearm.
The bullet itself is an impressive amalgamation of copper and lead, weighing in at 200 grains. This substantial weight contributes to its effectiveness as both a hunting round and a self-defense solution. With a caliber diameter of 0.4 inches, this projectile exits the barrel at a controlled velocity of 950 feet per second—intentionally subsonic to remain below the speed of sound.
The muzzle energy measure stands robustly at 401 foot-pounds, offering sufficient stopping power without unnecessary excesses. This particular trait makes it safe for suppressor use—an essential consideration for those requiring discretion in various operational environments.
Further enhancing its performance profile, this bullet possesses a sectional density (SD) of approximately 0.179—a testament to how well its mass distribution overcomes resistance upon impact. Coupled with a ballistic coefficient (G1) rating of 0.163, you can anticipate stable flight characteristics that contribute to consistent accuracy downrange.
Each box contains twenty carefully loaded rounds ready for deployment when needed most—be it defending against threats or tracking game under challenging conditions.