Description
If you're working with a .40 S&W and want serious penetration without the supersonic report, this Underwood load delivers. The 200-grain hard cast flat-nose bullet is purpose-built to punch through heavy bone and dense material, making it a smart choice whether you're hunting or handling predators in low-light conditions. The flat-nose design maintains its trajectory through resistance and stays nose-forward for maximum terminal effect, which matters more than most people realize when stopping power counts.
Black Cherry Coating Technology
Underwood upgraded their hard cast line with a new polymer-based Black Cherry coating that handles what older formulations couldn't. This coating has thermal stability built in, preventing gas cutting and reducing wear while keeping the bore cleaner than traditional lead ammunition. The real benefit you'll notice is the elimination of lead fouling in your barrel. Because the coating prevents lead-to-bore contact, you're not dealing with the stubborn residue that can build up on the lands and grooves over time, especially important if you plan to run suppressed fire where temperatures climb faster.
Subsonic Power and Flash-Suppressed
Loaded to 1000 feet per second with 444 foot-pounds of muzzle energy, these rounds travel below the speed of sound while maintaining the striking force the .40 was designed for. Underwood uses flash-suppressed powder throughout their line, so your vision doesn't take a hit if you need to fire in low light. Field-tested with real-world firearms that people actually carry, not laboratory guns with stretched barrels that give misleading velocity numbers.
Ammunition Build Quality
Every round comes in nickel-plated brass cases that feed reliably across all modern .40 S&W actions. Nickel plating provides better corrosion resistance than standard brass, cleaner reloading, and cases won't tarnish sitting in your ammo box. Non-corrosive boxer primers make these reloadable after you shoot them, stretching your ammunition budget further.
Key Specifications
- Caliber: .40 S&W
- Bullet Weight: 200 grains
- Bullet Type: Hard Cast Flat Nose
- Muzzle Velocity: 1000 fps
- Muzzle Energy: 444 ft-lbs
- Powder Type: Flash Suppressed
- Bullet Coating: Black Cherry Polymer
- Case Material: Nickel-Plated Brass
- Primer Type: Boxer, Non-Corrosive
- Reloadable: Yes
- Subsonic: Yes
- Manufacturer: Underwood Ammo
- Model Number: UW740
- UPC: 816874022471
What’s Included
- 20 loaded rounds of .40 S&W ammunition
Frequently Asked Questions
Will Underwood UW740 hard cast ammo work in my Glock or polymer-frame pistol?
Yes. The Black Cherry coating eliminates lead-to-bore contact, which is specifically important for modern firearms with polygonal rifling like Glocks. Hard cast ammunition is safe in all contemporary .40 S&W pistols. Underwood field-tests these loads in the popular carry guns people actually own, so you can count on reliable feeding and function.
Is subsonic ammunition quieter without a suppressor?
Subsonic loads travel below the speed of sound, so they won't produce the supersonic crack you get with standard ammo. They're noticeably quieter than full-power rounds, but paired with a suppressor the reduction in noise is dramatic. These rounds work well either way, and the flash-suppressed powder helps keep muzzle flash low if you're shooting in dim conditions.
Can I reload these casings after firing?
Yes, the nickel-plated brass casings are reloadable. Nickel-plated casings are easier to clean during the reloading process compared to standard brass, and they resist corrosion better if you're storing loaded ammo for longer periods. The boxer primers are non-corrosive, making them standard for reloading.
What's the advantage of the Black Cherry coating over plain lead bullets?
The Black Cherry polymer coating prevents lead-to-bore contact, which virtually eliminates lead fouling in your barrel. You'll keep your bore cleaner with fewer cleanings required, the coating has superior thermal stability, and it protects against gas cutting and wear. If you run suppressed, where barrel temperatures climb faster, this coating makes a real difference in barrel life.




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