$91.99
8 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
Peterson Cartridge built its reputation on one thing: making the most consistent rifle brass they possibly can, and their .300 Winchester Short Magnum cases live up to it. These are unprimed, factory-formed cases ready for your bench, giving you a clean starting point for load development or your regular reloading rotation. If you shoot the WSM for long-range hunting or ringing steel at distance, this is the kind of brass that takes variables off the table.
Peterson is a family-owned Pennsylvania company that does nothing but brass. They don't make bullets, powder, or primers, so every bit of their equipment and quality control goes toward producing cases with consistent wall thickness, uniform case capacity, and properly formed flash holes. Every casing runs through both automated and hand inspection before it ships, which is why reloaders consistently talk about tight tolerances and true, unflawed cases. The brass is annealed during production, leaving Peterson's signature reanneal line on the case and giving you uniform neck tension for repeatable ignition.
The .300 WSM is a large rifle primer case running a .308 caliber bullet, and it earns its keep with 165 to 200 grain projectiles pushed by powders like H4350 and H4831. Peterson brass arrives minimal-prep, meaning flash holes are centered and deburred and dimensions are tight enough that a lot of folks skip sorting entirely. Give the cases a quick inspection and a light chamfer, work up your charge from the low end, and you're off. With proper care, Peterson cases are known for delivering well beyond the industry average number of reloads, so the cost per firing drops the longer you run them.
This is a premium case for people who treat brass as a source of accuracy rather than a throwaway component. If low velocity spread and vertical consistency at distance matter to you, Peterson gives you a foundation worth building on.
They are unprimed, factory-formed cases. You'll add your own large rifle primers, powder, and bullets as part of your load process. They arrive with centered, deburred flash holes and tight dimensions, so most reloaders need only minimal prep before the first firing.
The .300 WSM runs a large rifle primer. Many handloaders reach for a large rifle magnum primer when pushing heavier charges, but standard large rifle primers work well for a lot of loads. Always follow current published load data for your specific bullet and powder combination.
Peterson engineers their cases for extended life, and reloaders regularly report numbers well above the industry average with proper care. Case longevity depends on your load pressure, sizing practices, and how you treat the brass between firings. Keep charges reasonable and size thoughtfully and these cases will reward you with plenty of firings.
Peterson cases arrive in excellent shape with uniform weight, consistent wall thickness, and properly formed flash holes. A quick visual inspection and a light chamfer on the case mouths is usually all it takes before you start working up a load. Many shooters skip case sorting entirely because the lot-to-lot consistency is so tight.
| UPC | 810068271324 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 40079-R |
| Quantity | 50 |
| Shipping Weight | 2.3 |
You must be logged in to post a review.
Reviews
There are no reviews yet.