Product Description Winchester StaBALL HD is a temperature-insensitive, double-base ball powder designed to stay stable in extreme hot or cold conditions. This slow-burning magnum rifle propellant is engineered to deliver optimal loading density in large-capacity magnum cartridges and meters precisely for consistent charges, improved velocity, and lower standard deviationskey elements for match-grade accuracy. It is commonly used in cartridges such as 6.5 PRC, 7mm Remington Magnum, and 300 PRC (and more, depending on published load data). Product Highlights Temperature-insensitive performance helps maintain consistency in hot and cold environments. Double-base ball powder designed for precise metering and repeatable charge weights. Slow-burning magnum rifle powder supports optimal loading density in large-capacity cases. Formulated to support improved velocity and lower standard deviations for accuracy-focused loads. Includes copper fouling reducer additives to help extend shooting sessions between bore cleanings. Specs Brand: Winchester Powder Product Type: Smokeless rifle powder (ball powder) Base Type: Double-base Burn Rate/Application: Slow-burning magnum rifle cartridges Net Weight: 8 lb Manufacturer Part Number: STABALLHD8 UPC: 039288504641 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 products manufacturer.