Product Description Winchester Ammo WLRM Centerfire Large Magnum Rifle primers are designed for reloaders who demand fast, dependable ignition in a wide range of shooting conditions. These non-corrosive, all-weather primers are engineered for consistent sensitivity and precise performance, with carefully controlled primer mixture weights and tight manufacturing tolerances. Rigorously tested in Winchester labs, they are built to deliver reliable ignition and stability across extremes of temperature and humidity. Packaged as 1,000 primers per box (5 boxes per case), these primers are a practical choice for high-volume loading of magnum rifle loads. Product Highlights Large Magnum Rifle centerfire primers engineered for reliable ignition in demanding magnum rifle loads Non-corrosive, all-weather primer design for dependable performance across varied conditions Rigorously tested for consistency and sensitivity beyond typical temperature and humidity ranges Carefully controlled primer mixture weights and tight tolerances for repeatable results Bulk-friendly packaging: 1,000 primers per box and 5 boxes per case for efficient reloading Specs Brand: Winchester Ammo Product Type: Centerfire primers Primer Size: Large Magnum Rifle Model: Centerfire Series: #8-1/2M - 120 Non-Corrosive: Yes All-Weather: Yes Quantity: 1,000 primers per box Boxes per Case: 5 Manufacturer Part Number: WLRM UPC: 020892300125 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.