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Building consistent ammunition for the 300 Weatherby Magnum demands premium components, and this Select Plus unprimed brass delivers exactly that. Produced exclusively by Norma Precision for Weatherby, each case is engineered with CNC-machined primer pockets cut to match-grade specifications, ensuring precise and reliable primer seating every time you reload. This level of precision matters when you're putting together loads for long-range hunting or serious target work.
The 300 Weatherby Magnum is built on a high-capacity belted case that demands quality components. Norma precision brass starts with tight tolerances and careful manufacturing that keeps case-to-case variation minimal. That consistency translates directly into more uniform velocities and tighter groups at the range. The CNC-machined primer pockets won't need deburring or have the inconsistencies you sometimes get with ordinary brass, saving you prep time and delivering better results without extra work.
Whether you're working up loads for elk country or stretching out to extended distances, the 300 Weatherby rewards quality brass. With heavier bullets in the 180 to 200-grain range, this cartridge reaches impressive velocities that demand stable, consistent cases. The Select Plus line gives you the foundation to build accurate, repeatable ammunition that performs under demanding conditions. Cases come unprimed, so you'll size, deburr, and chamfer them before assembly, and the initial mouth may not be perfectly round out of the box—a normal characteristic of premium precision brass.
Quality brass can deliver multiple reloads when handled properly. Many reloaders report getting 5 to 7 reloads from this Weatherby/Norma brass under typical hunting loads, and some achieve even more with reduced loads and careful case maintenance. Neck-sizing instead of full-length sizing extends case life further. With proper annealing and inspection, this brass will keep giving you accurate ammunition for years.
Yes, unprimed brass requires preparation before assembly. You'll need to size, deburr, and chamfer the cases. The case mouths may not be perfectly round out of the box, which is normal for premium precision brass. After sizing, a light annealing stain near the neck is also normal from the manufacturing heat-treat process and won't affect performance.
Most reloaders report 5 to 7 reloads from 300 Weatherby Magnum brass under full power hunting loads. You can extend this further by using neck-sizing instead of full-length sizing, keeping loads conservative, and annealing periodically. Proper case inspection between reloads will help you catch any primer pocket issues early.
Large rifle magnum primers (like Federal 215M) are recommended for the 300 Weatherby. Popular powders include H1000, Retumbo, and Reloader 22. Weatherby factory loads often run compressed charges due to the case's high capacity, so follow established reloading data carefully and work up loads gradually, starting 10 percent below maximum.
These cases are produced exclusively for Weatherby by Norma Precision, a Swedish brass manufacturer with decades of experience. Norma also produces Weatherby's factory ammunition. The Select Plus line represents Weatherby's premium unprimed brass offering with the tighter tolerances and match-grade primer pockets you need for precision handloading.
| UPC | 747115431588 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BRASS300CT50 |
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