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Peterson Cartridge built its reputation on brass that shows up uniform right out of the box, and this 25 Creedmoor SRP offering is cut from the same cloth. Each case is made to match-grade tolerances with consistent internal volume, neck tension, and case hardness, which is exactly what you want when you're chasing single-digit standard deviations across a string. If you've been necking down 6.5 Creedmoor brass to feed a 25 CM, purpose-built headstamped brass takes a lot of the guesswork out of your load development.
The small rifle primer pocket isn't just a spec on the box. A smaller pocket leaves more material intact at the case head, so the pocket tends to hold up longer under warmer, higher-pressure loads before it loosens. That translates to more firings out of each case and tighter, more repeatable ignition, which is why so much of the match crowd has moved toward SRP brass in the Creedmoor family. The flip side worth knowing: small rifle primers can be a touch less forgiving in genuinely cold weather, so if you're building a dedicated cold-weather hunting load, keep that in mind during workup.
One detail to plan for: Peterson's SRP cases use a tighter 0.060-inch flash hole versus the 0.080-inch hole in their large rifle primer line. You'll want an X-small or undersized decapping pin to deprime these without bending a standard pin. A primer like the CCI 450 is a popular pairing for this brass. The 25 Creedmoor itself is a sweet spot in the lineup, running 0.257-inch bullets anywhere from roughly 70 to 135 grains and splitting the difference between the 6mm and 6.5 Creedmoor on recoil and downrange performance.
These are unprimed, unfired cases ready for your prep routine, built and inspected in the USA. Run them through your normal chamfer, deburr, and sizing steps and they're ready to load. Good bullets paired with good brass is how you get repeatable results on target, and Peterson gives you a strong foundation to start from.
These cases use small rifle primers, not large rifle primers. The small rifle primer pocket leaves more material at the case head, which generally extends case life under warmer loads and can tighten up your velocity consistency. The CCI 450 is a popular primer choice reloaders run in this brass.
Yes. Peterson's SRP brass uses a smaller 0.060-inch flash hole compared to the 0.080-inch hole in their large rifle primer line. You'll want an X-small or undersized decapping pin so you don't bend a standard-size pin while depriming.
No, these are unprimed cases. They come new and unfired, so you'll run them through your usual prep like chamfering, deburring, and sizing before priming and loading. That gives you full control over your primer and powder combination from the start.
It depends on your use. Small rifle primer brass shines for competition and higher-pressure loads thanks to longer primer pocket life. For dedicated cold-weather hunting loads, large rifle primers tend to ignite more reliably in very low temperatures, so factor that into your workup if you'll be shooting in the cold.
| UPC | 850005375524 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 40027-R |
| Caliber/Gauge | 25 CREEDMOOR |
| Length | 5.7500 |
| Quantity | 50 |
| Shipping Weight | 1.6 |
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