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The 375 Weatherby Magnum is Roy Weatherby's take on the classic 375 H&H, blown out with that signature double-radius shoulder to squeeze more velocity out of a proven dangerous-game round. This unprimed brass gives handloaders the foundation to build that performance themselves, and it comes straight from the source with the same quality Weatherby has demanded since the 1940s.
This brass is produced exclusively by Norma Precision, which is the same outfit that has supplied Weatherby cases for decades. Each case features CNC-machined primer pockets made to match-grade specifications, so ignition stays consistent from one round to the next. That kind of uniformity matters a lot when you're pushing a 300-grain bullet toward 2,800 feet per second and want tight groups instead of fliers.
One thing to know going in is that these cases are factory annealed, which is why you might notice some discoloration near the neck and shoulder. That's not a defect. Annealing sets the proper hardness and gives the brass the flexibility to expand and contract through repeated firings and resizing. If the coloring bothers you, a quick run through a tumbler cleans most of it off. The real benefit is case life, since properly annealed brass holds up to more reload cycles before you start seeing neck splits.
This is a serious medium-bore cartridge, capable of driving heavy bullets with the flat trajectory Weatherby is known for, which makes it a go-to for African plains game and dangerous game alike. Starting with quality brass is half the battle when you're loading a round that operates at these pressures. Pair it with a large rifle primer, a stout charge of slow-burning powder, and a good 300-grain projectile, and you've got the makings of ammo that performs when it counts. Just remember this is unprimed brass, not loaded ammunition, so you'll be building these from the ground up.
No, this is unprimed brass only. You'll get 20 empty, unprimed cases that need to be primed, charged with powder, and seated with a bullet before they're ready to fire. It's meant for handloaders building their own 375 Weatherby Magnum ammunition.
This brass is produced exclusively for Weatherby by Norma Precision, a longtime supplier known for quality reloading components. Weatherby has sourced cases from Norma for decades, so you're getting proven brass under the Weatherby headstamp.
That coloring comes from the factory annealing process and is completely normal, not a sign of damage. Annealing sets the correct hardness and lets the brass flex through repeated firing and resizing. If you prefer a uniform shine, running the cases through a tumbler before loading removes most of it.
With proper handloading practices and correct annealing maintenance, quality Norma-made brass like this holds up to multiple reload cycles. Case life depends on your load pressure, sizing habits, and how well you care for the brass between firings. Watching for signs like loose primer pockets or neck splits will tell you when a case is done.
| UPC | 747115401093 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BRASS375 |
| Caliber/Gauge | 375 Weatherby Mag |
| Product Type | Unprimed Case |
| Quantity | 20 |
| Style | Magnum |
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