Weatherby Select Plus Brass Features Weatherby Select Plus brass is manufactured specifically for the .338 WBY RPM cartridge a proprietary round Weatherby designed around its RPM rifle platform to deliver magnum-class performance from a shorter action. Because this brass is purpose-built for the RPM chamber reloaders avoid the guesswork of adapting cases from a parent cartridge helping ensure proper headspace and reliable chambering. Consistent case wall thickness and uniform dimensions from Weatherby s own production line support even powder distribution and repeatable ignition from case to case. Supplied unprimed this brass gives handloaders full control over primer selection to match their specific load development goals. Reloadable high-quality brass cases are a foundational component for any precision handload and Weatherby s own case ensures compatibility with factory-spec dies and chambers built around the RPM cartridge. Packaged 20 to a box this brass is sized appropriately for reloaders working up dedicated hunting or precision loads for their .338 WBY RPM rifle. Weatherby Select Plus Specifications Brand: Weatherby Line: Select Plus Caliber: .338 WBY RPM Material: Brass Firearm Type: Rifle Count: 20 Available At: GrabAGun