Description
The 6XC has earned its reputation as one of the flattest-shooting, most accurate 6mm rounds you can feed a match rifle, and quality brass is where a good load starts. Peterson Cartridge builds this large rifle primer 6XC case to match-grade standards, giving handloaders a consistent foundation for load development instead of a box of brass you have to sort, weigh, and fight before it ever sees the range.
What Sets Peterson 6XC Brass Apart
Peterson is a family-owned American manufacturer that runs every case through a tightly monitored, multi-step production process. The payoff is uniform wall thickness, consistent internal capacity, and clean primer pockets and flash holes, all of which translate to more repeatable ignition and tighter velocity spreads. Reloaders who've made the switch regularly report first-firing ES and SD numbers that used to take heavy case prep to reach with other brass.
Load Development With The 6XC Cartridge
Designed by 11-time National Champion David Tubb, the 6XC traces back to the .250 Savage and .22-250 family and was built specifically for High Power and long-range match work. It feeds smoothly from a magazine thanks to its .308-like body taper, which is a big reason it's stayed popular in PRS and NRL circles. This is the large rifle primer version, so it takes a standard decapping pin and works with common large rifle primers, keeping your reloading routine straightforward.
Getting The Most From Your Peterson 6XC Cases
These come unprimed and ready for your process. A light chamfer, deburr, and neck prep is all most reloaders do before their first firing. Pair them with quality bullets in the 100 to 115 grain class, work up a load for your chamber, and you've got the makings of a rig that'll ring steel way out past what most 6mm rounds can manage.
Key Specifications
- Manufacturer: Peterson Cartridge
- Manufacturer Part Number: 40041-R
- UPC: 810068270617
- Caliber: 6XC (6mm XC)
- Product Type: Unprimed Reloading Brass
- Primer Pocket: Large Rifle Primer (LRP)
- Flash Hole Diameter: 0.080"
- Quantity: 50 Cases Per Box
- Parent Case: .250 Savage / .22-250 Family
- Cartridge Designer: David Tubb
- Country of Origin: Made in the USA
What’s Included
- 50 unprimed 6XC large rifle primer brass cases
- Peterson plastic ammo storage box
Frequently Asked Questions
Is this Peterson 6XC brass large rifle or small rifle primer?
This is the large rifle primer (LRP) version, part number 40041-R. It uses the standard 0.080-inch flash hole, so a normal decapping pin works fine with no undersized pin required. If you specifically want the small rifle primer setup for hot loads, that's a separate Peterson 6XC part number.
Do the 6XC cases come primed or loaded?
No, these are unprimed empty brass cases meant for handloading. You'll add your own primer, powder, and bullet as part of your reloading process. Most reloaders just chamfer, deburr, and prep the necks before the first firing.
What bullets and velocities work well with Peterson 6XC brass?
The 6XC is optimized for heavier high-BC 6mm bullets, generally in the 100 to 115 grain range, which is what makes it shine at long distance. Peterson's testing found their cases run well right around the 2,900 fps accuracy node. As always, work up your load carefully in your specific chamber and watch for pressure signs as you climb.
How many times can I reload Peterson 6XC brass?
With proper care and reasonable load pressures, this match-grade brass is built to hold up through many firings, which is a big part of why serious reloaders favor it. Consistent case prep and full-length sizing to your chamber will stretch the life even further. Keep an eye on primer pocket tension and neck condition to know when a case is done.





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