Underwood Ammunition 40 S&W 140 Grain Lehigh Maximum Expansion Lead-Free Box of 20

The Underwood 40 S&W 140 Grain precision projectile delivers dependable performance for shooters who want repeatable results. Underwood pairs a 140-grain precision projectile projectile with quality brass casings and clean-burning propellant. As a result, this load gives handgun and carbine shooters controlled expansion and reliable penetration on every trigger pull. Specifically, this loading suits personal defense and duty carry.

About This Underwood Load

Underwood built its reputation on tight manufacturing tolerances and consistent quality control. This 40 S&W offering reflects that same standard. The factory sizes and primes each case for reliable chambering across a wide range of pistols. Additionally, the plant meters every propellant charge carefully, so velocities stay consistent from lot to lot. Therefore, shooters loading this 140 grain precision projectile round can expect uniform cycling in both striker-fired and hammer-fired platforms. In short, this ammunition delivers the shot-to-shot consistency that makes practice sessions and function testing meaningful.

Ballistic Performance and SAAMI Specifications

Underwood manufactures every round in this line to SAAMI’s published specifications for the 40 S&W cartridge. This ensures safe chamber pressures and reliable dimensional compatibility with SAAMI-spec firearms. For example, handloaders working up their own 140 grain projectiles often reference this factory loading’s published velocity as a useful benchmark. However, chronograph results can vary by barrel length. Therefore, always verify velocity and function in your own firearm before relying on this load for defensive or competition use.

Boxes ship in standard quantities of 20 rounds, which makes restocking for range day simple. For more options, browse the full 40 S&W ammunition selection, including additional precision projectile and defensive loads. Also check our Bulk Savings page for discounted case-quantity pricing on Underwood 40 S&W ammunition. Finally, store all ammunition in a cool, dry location away from direct sunlight. Doing so preserves propellant consistency and primer reliability over time. Whether you compete, train, or simply want a trustworthy round on hand, this load performs the same way every time.