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The 6.5 Weatherby RPM is one of those cartridges that rewards a careful handloader, and starting with quality brass is half the battle. Peterson Cartridge builds these unprimed cases to match-grade standards at their facility in Pennsylvania, giving you a consistent, durable foundation for working up accurate loads in your Mark V or any rifle chambered for the round. This is large rifle primer brass, so you can prime, charge, and seat without any guesswork about pocket size.
Peterson starts with premium C260 cartridge brass drawn through a multi-stage press, then trims, forms, and anneals each case for uniform neck tension. The company is known for tight control over weight, wall thickness, and concentricity, which translates to lower runout and more repeatable velocities when you're at the bench. The cases are induction annealed at the neck and shoulder, so they grip bullets consistently and tend to hold up well through repeated firings when you take care of them.
This cartridge is a beltless, rebated-rim design based on a stretched 6.5-284 Norma case, running a 35.25-degree shoulder and a .473-inch rim that works on a standard bolt face. It's built to push a 140-grain bullet past 3,000 fps and handle the full spread of 6.5mm projectiles, including the heavier high-BC bullets long-range folks love. With a SAAMI max pressure in the 65,000 psi range, good brass matters, and Peterson gives you a dependable case to build around.
Whether you're loading for a lightweight mountain hunt or dialing in a precision rig for longer shots, this brass is a solid place to begin. Pair it with your preferred primers, powder, and bullets, and you've got the makings of some seriously accurate ammunition.
This brass is set up for large rifle primers. Peterson lists this part number as their standard large primer pocket configuration, so you'll want large rifle primers on hand when you start loading.
Yes. Peterson induction anneals the neck and shoulder of every case so you get uniform neck tension and better case life. The cases are unprimed, so you'll size, prime, charge, and seat as part of your normal load workup. Many reloaders still run a final trim and inspection before loading just to keep everything uniform.
Peterson builds their cases to match-grade tolerances with tight control over weight, wall thickness, and concentricity. That consistency helps reduce runout and tighten up velocity spreads, which is exactly what you want from a precision 6.5. It's also made in the USA and known for holding up through multiple firings when cared for properly.
The 6.5 Weatherby RPM was designed for Weatherby's scaled-down six-lug Mark V action, most notably the Mark V Backcountry and Backcountry Ti rifles. It's a beltless, rebated-rim design that runs on a standard .473-inch bolt face, so any properly chambered rifle in the cartridge will work with this brass.
| UPC | 810068270174 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 40066-R |
| Shipping Weight | 2.17 |
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