Nosler Custom Brass 300 Weatherby Magnum - Box of 50 Premium Cartridge Cases

Nosler Custom Brass 300 Weatherby Magnum is premium reloading brass engineered for handloaders who demand consistency and reliability. Each box of 50 cases arrives fully prepped—deburred, chamfered, sized, and trimmed to proper length—so you can focus on load development instead of tedious case preparation. Unlike generic brass, Nosler takes the extra steps that separate premium components from ordinary stock, delivering uniform, match-ready cases that reward precision and repeatability.

These cartridge cases are hand-inspected to meet strict dimensional standards, then weight-sorted to within ±0.5 grains for shot-to-shot consistency. Flash holes are deburred and verified for proper alignment, and the case mouths are chamfered inside and out to ensure reliable seating and concentricity. Full-length sizing and proper trimming mean your first reload is as accurate as your last, and the quality construction extends case life across multiple firings.

Whether you're a competitive long-range shooter, a precision rifle hunter, or a handloader chasing the perfect load for your Weatherby Magnum, Nosler Custom Brass removes the guesswork from case prep. The Nosler headstamp on every piece is your guarantee of material quality and meticulous workmanship. When accuracy matters, start with brass that's already won half the battle.

Key Features

• Fully prepped and ready to load—no additional case prep required
• Hand-inspected and weight-sorted to ±0.5 grains for maximum consistency
• Flash holes deburred and checked for proper alignment
• Case mouths chamfered inside and outside for reliable bullet seating
• Full-length sized and trimmed to correct specification
• Premium materials engineered for extended case life and reloadability
• Nosler headstamp on every case

Specifications

Frequently Asked Questions

Is Nosler Custom Brass primed or unprimed?

These cases are unprimed and ready for your priming setup. The description specifies they are unprimed brass.

What extra preparation has been done to these cases?

Nosler has completed all critical prep work: flash holes are deburred and checked for alignment, case mouths are chamfered inside and outside, cases are full-length sized and trimmed to specification, and each piece is hand-inspected and weight-sorted to ±0.5 grains. You can load immediately without additional prep.

Why is weight sorting important for reloading?

Weight-sorted brass ensures uniform case capacity, which translates directly to more consistent powder charges and bullet velocities. Nosler's ±0.5-grain tolerance produces tighter velocity spreads and better shot-to-shot accuracy downrange.

Will these cases work in my 300 Weatherby Magnum rifle?

Yes, these cases are designed specifically for the 300 Weatherby Magnum cartridge. Always verify proper fit and safety with your specific rifle before firing any handloaded ammunition.