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Peterson Cartridge built its name on doing one thing and doing it right, and this 7mm Remington Magnum Long brass is a perfect example. The "Long" designation is the part worth paying attention to. Unlike standard belted magnum brass that headspaces off the belt, this case is designed to headspace off the shoulder, which is the same approach Peterson used with their 300 Win Mag Long brass. For reloaders, that means more even stretch, better fireforming, and a real shot at extending the number of reloads you get out of each piece.
This comes to you unprimed and ready to prep. The 7mm Rem Mag has been a big game and long-range favorite since 1962, loved for its flat trajectory, high velocity, and friendly barrel life. Starting with quality brass is the single biggest thing a handloader can do to tighten up groups, and Peterson's reputation among precision and competitive crowds speaks for itself.
Every case starts as premium C260 cartridge brass drawn into tubes, trimmed, and formed through a careful multi-step process. Primer pockets are cut, flash holes are punched, and the necks get an induction anneal so they grip the bullet consistently. That attention to uniform wall thickness and internal capacity is what gives you repeatable charges and pressures down the line.
Since this is a bulk pack, the brass ships loose rather than in Peterson's plastic ammo boxes. A case mouth here or there can get slightly dinged in transit, so a trip through your sizing die to true up the necks and set them to your chamber is a smart first step before loading. Handloaders who run this brass regularly report excellent lot-to-lot consistency and tight groups once the cases are prepped, making this a solid pick for anyone serious about wringing accuracy out of their 7mm Rem Mag.
The "Long" version is designed to headspace off the shoulder instead of the belt, the same concept Peterson used on their 300 Win Mag Long brass. This approach helps reduce case stretch in the body and can lengthen the service life of your brass. It still works in standard 7mm Rem Mag chambers.
It ships unprimed and ready for you to prep and load. You'll want to run the cases through your sizing die to true up the necks and set them to your chamber before seating bullets.
The bulk pack comes loose rather than in Peterson's plastic ammo boxes. Because of that, an occasional case mouth can get slightly bent in shipping, so sizing before loading takes care of any dings and gets everything uniform.
Peterson dedicates its entire facility to producing only brass rifle casings, which lets them hold tight tolerances on wall thickness, weight, and internal capacity. That consistency translates to more even charges and pressures, which is exactly what precision handloaders are after. It's a favorite among long-range and competitive crowds for a reason.
| UPC | 810068270716 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 40071-P |
| Length | 10" |
| Quantity | 250 CT |
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