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Nosler Custom Brass in .300 Blackout takes a big chunk of the grunt work out of reloading. This is new, unprimed brass that arrives fully prepped and ready to load, so you're not spending an afternoon trimming, chamfering and sorting before you ever touch a press. If you reload for a .300 Blackout AR, bolt gun or pistol, this is the kind of foundation brass that lets you focus on building a load instead of babysitting case prep.
What sets this brass apart is the attention to consistency. Each lot is weight-sorted to keep case capacities uniform, which translates to more predictable velocities and tighter groups once you dial in your powder charge. The case mouths come chamfered and deburred, and the flash holes are deburred as well, so primer seating and bullet seating go smoothly from the very first case. Every piece carries the Nosler head-stamp and is held to exact dimensional standards and tolerances for repeatable results.
The .300 Blackout is built around a shortened and necked-up 5.56 case, and having purpose-made brass instead of converting fired 5.56 saves you a mess of forming and prep steps. These cases use a small rifle primer pocket and come pre-sized and trimmed to proper length, so they're genuinely load-ready on arrival. For folks running both subsonic and supersonic loads, that uniform case capacity really pays off when you're chasing consistency across two very different pressure ranges.
Nosler brass carries the same quality control reputation that's backed their bullets for decades. The emphasis on uniform neck wall thickness, consistent trimmed length and quality materials means these cases hold up through multiple firings and give you the kind of case life that makes reloading worth the effort. Whether you're working up a hunting load or just want dependable range brass you can trust, this is a solid, no-nonsense choice for your .300 Blackout dies.
Yes. This brass is fully prepped, with the case mouths chamfered and deburred, the flash holes deburred, and the cases pre-sized and trimmed to length. You can prime, charge and seat bullets without doing the usual case prep first.
No, these are new, unprimed cases. They use a small rifle primer pocket, so you'll want small rifle primers to get started. This is reloading brass, not loaded ammunition.
The .300 Blackout is based on a shortened and necked-up 5.56 case, and forming your own from fired brass involves cutting, sizing and extra prep that can be tedious and inconsistent. Nosler Custom Brass is purpose-made for .300 Blackout, weight-sorted and held to tight dimensional tolerances, so you get uniform case capacity and better consistency without the conversion hassle.
It will. The weight-sorted, uniform case capacity gives you a consistent foundation whether you're building heavy subsonic loads or lighter supersonic ones. As always, work up your charges carefully using published load data for your specific bullet and powder.
| UPC | 054041451239 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 45123 |
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