Product Description Winchester Silvertip Components bring the same legendary precision and performance to handgun reloaders that has made Winchester a trusted name in ammunition for generations. The WB40ST155X Silvertip Defense Hollow Point bullets are purpose-built for reloaders who demand consistent, reliable results in 40 S&W and 10mm (.400") firearms. Weighing 155 grains, these bullets are custom-designed and manufactured to precise specifications to deliver specific on-target performance characteristics. Proudly Made in the USA, they are an ideal choice for self-defense and defensive practice reloading applications. Product Highlights Silvertip Defense Hollow Point Design - Engineered for optimal expansion and superior terminal performance on impact, ideal for self-defense handgun reloading. Precision-Manufactured Components - Custom-designed to exact specifications, ensuring consistent performance, reliable feeding, and excellent accuracy in 40 S&W and 10mm platforms. 155 Grain Bullet Weight - Delivers a well-balanced combination of velocity, energy transfer, and manageable recoil for defensive applications. Made in the USA - Manufactured domestically to Winchester&';s exacting quality standards, guaranteeing dependable and consistent reloading components. Bulk Pack Value - Supplied as 100 bullets per box with 10 boxes per case, providing outstanding value for dedicated reloaders stocking up on premium components. Specs Brand: Winchester Ammo MPN: WB40ST155X UPC: 020892633901 Caliber: 40 S&W / 10mm (.400") Bullet Weight: 155 Grain Bullet Type: Silvertip Defense Hollow Point Quantity: 100 Bullets per Box / 10 Boxes per Case Country of Origin: USA Application: Centerfire Handgun Reloading Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>