Nosler Custom Brass 300 Remington Ultra Magnum - Box of 25 Premium Cartridge Cases

Nosler Custom Brass 300 Remington Ultra Magnum cartridge cases give reloaders a head start—they arrive fully prepped and ready to load. If you're serious about handloading for your 300 RUM rifle, quality brass is half the battle. Nosler has already done the time-consuming prep work: each case is chamfered, deburred, checked for proper alignment, sized, and trimmed to the correct length. That means you skip the tedious setup and get straight to load development.

Every piece in the box is hand-inspected to meet Nosler's dimensional standards and tolerances. Consistency across a batch of brass translates directly to tighter velocity spreads, more predictable ballistics, and tighter groups downrange—exactly what long-range and precision shooters need. Nosler Premium Brass is engineered for case life and reloadability, so you can run these cases through your press multiple times without chasing new brass every reload cycle.

Whether you're working up loads for a long-range hunt, a PRS match, or a trip to the range, this 300 Remington Ultra Magnum brass gives you a reliable, consistent foundation. Buy a box of 25 and focus your energy on finding the load that shoots best in your rifle—not on preparing cases.

Key Features

• Fully prepped and ready to load—chamfered, deburred, and trimmed to length
• Hand-inspected for dimensional accuracy and consistency
• Optimized for case life and multiple reloads
• 25 premium cartridge cases per box
• Sized and checked for proper alignment

Specifications

Frequently Asked Questions

What prep work has already been done to this brass?

Each case has been chamfered, deburred, sized, trimmed to proper length, and checked for alignment. They're hand-inspected to meet dimensional standards, so they're ready to load straight from the box.

Can I reload these cases multiple times?

Yes. Nosler Custom Brass is designed for optimum case life and reloadability, so you can use these cases through multiple reload cycles.

Is this brass suitable for long-range and precision shooting?

Yes. The hand-inspection process and dimensional consistency make this brass well-suited to precision applications where velocity and pressure uniformity matter.

How many cases are in a box?

Each box contains 25 premium cartridge cases.