Winchester Handgun Bullets .40 Cal/10mm 0.400" 165 gr FMJ 100/ct

Winchester Handgun Bullets .40 Cal/10mm 0.400" 165 gr FMJ represent the backbone of reliable duty and training ammunition for law enforcement, military personnel, and serious shooters. These full metal jacket rounds are purpose-built for high-volume shooting applications where consistent performance and cost-effectiveness are non-negotiable. The 100-round count per box makes this an efficient choice for qualifying courses, defensive training drills, and range sessions where you need dependable ballistics without premium pricing.

The 165-grain FMJ (full metal jacket) projectile is engineered for controlled penetration and uniform expansion characteristics across both .40 S&W and 10mm platforms. Winchester's bulk component manufacturing ensures tight tolerances on the 0.400" diameter, critical for chamber fit and feeding reliability in semi-automatic platforms. Full metal jacket construction eliminates concerns about lead exposure during indoor range use and provides superior barrier performance compared to hollow point alternatives in tactical training scenarios. The consistent powder charge and primer seating in these rounds deliver shot-to-shot velocity uniformity essential for zeroing optics and validating duty loads.

This product performs optimally in Smith & Wesson M&P .40, Glock 22/23, and most modern .40 S&W service pistols, as well as 10mm platforms like the Glock 20/21 and Colt Delta Elite. Law enforcement armorer programs and military combat pistol courses regularly cycle Winchester bulk ammunition for qualification and remedial training due to its reliability record and non-corrosive priming. The 165-grain weight sits within NFOA and FBI protocol windows for duty ammunition performance, making these rounds suitable for validating your personal defense loads. Store in a cool, dry environment to maintain primer integrity over extended shelf life.