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If you're loading 6.5 Creedmoor and want brass that holds tight numbers through a long season, Peterson's SRP (Small Rifle Primer) cases are hard to beat. Peterson builds these in small batches in the USA to match-grade standards, and the attention shows up on the bench: consistent neck wall thickness, uniform case length, and headspace that behaves right out of the box. These ship unprimed, so you assemble to your own spec, and they come in Peterson's flip-top plastic ammo boxes that keep necks from getting dinged in transit.
The big reason reloaders reach for the small primer pocket version comes down to the case head. The SRP design puts more material around the pocket, which helps the pockets stay snug through many firings and lets the brass stand up to warm loads better than a large primer pocket case. A lot of precision and PRS shooters also feel the small rifle primer gives more consistent ignition, which pays off in lower extreme spread and standard deviation when you're stretching out to distance.
Every Peterson case is annealed during production, so neck tension stays uniform and the brass lasts longer before it needs attention. Feedback from people running this brass routinely mentions 10-plus reloads when annealed and sized correctly, with some pushing well beyond that. It specs out right alongside other top-tier brands, and the lot-to-lot uniformity is a big part of why folks who load in volume keep coming back.
These SRP casings use a reduced flash hole measuring 0.060 inches rather than the 0.080-inch hole found on Peterson's large rifle primer brass. That smaller hole means you'll want an undersized or extra-small decapping pin to deprime them without hanging up. It's a quick swap on most dies and worth sorting out before your first pass. For 6.5 Creedmoor handloaders building match ammo, gas gun loads, or precision hunting rounds, this is premium brass that gives you a dependable, repeatable foundation to build on.
SRP stands for small rifle primer and LRP stands for large rifle primer. The SRP version has more material around the case head for a stronger, longer-lasting primer pocket, and many shooters find it gives more consistent ignition with lower ES and SD. The large rifle primer version uses a standard large pocket and a larger 0.080-inch flash hole.
Yes. These SRP cases use a reduced 0.060-inch flash hole instead of the standard 0.080-inch hole, so a regular decapping pin can hang up when you deprime. Peterson recommends an undersized or extra-small decapping pin, which is a simple swap on most sizing dies.
Yes, every Peterson case is annealed during production. That annealing keeps neck tension uniform from case to case and extends how many times you can reload the brass before it needs attention.
Peterson builds these to get more reloads than the industry average, and reloaders commonly report 10 or more firings when the brass is annealed and sized properly, with some pushing well beyond that. Actual case life depends on your load pressure, sizing setup, and how well you maintain the brass. Bumping the shoulder correctly and annealing between firings will stretch it the furthest.
| UPC | 859449006216 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 40037-P |
| Shipping Weight | 13.2 |
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