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The 300 RCM is one of those cartridges that rewards a reloader who likes to tinker, and starting with quality brass makes all the difference. This Hornady unprimed case is built with tight wall concentricity so the bullet seats true in both the case and your chamber, and the uniform case wall thickness is a big part of what keeps groups tight downrange. The brass comes unprimed, which means you get to choose your primer, powder, and bullet and dial in a load that fits your rifle instead of settling for someone else's recipe.
The 300 RCM was designed by Hornady and Ruger using a case based on the proven 375 Ruger, with a modern, low-taper body and a sharp shoulder. The whole idea was to deliver full magnum performance from a short-action rifle and shorter barrels. It punches right up there with the 300 Win Mag and 300 WSM with bullets in the 150 to 180 grain range, and it does it while burning less powder, which handloaders tend to appreciate. It also happens to be a genuinely reloader-friendly round that runs well with standard, off-the-shelf powders.
This case accepts a wide range of .308 diameter bullets, with most folks working somewhere between 130 and 220 grains depending on whether they're after deer, elk, or something bigger. Published data commonly pairs these cases with large rifle primers and powders in the IMR-4350 to Reloder-17 burn range. Starting with fresh, uniform Hornady brass gives you a repeatable baseline, so when you work up a load you can trust that the case isn't the variable throwing off your numbers.
Whether you're building hunting loads for a Ruger Hawkeye or feeding another 300 RCM chamber, this brass gives you a dependable starting point and plenty of reloadable life. Prep it, prime it, and get to work.
These cases ship unprimed, so you install the primer of your choice during the loading process. That gives you control over primer selection to match your powder and the conditions you shoot in. Published 300 RCM data typically calls for large rifle primers, with some reloaders stepping up to magnum primers for heavier charges.
The 300 RCM uses standard .308 diameter bullets, and handloaders commonly run anywhere from 130 to 220 grains depending on the game and application. Factory-style performance lands in the 150 to 180 grain sweet spot, matching 300 Win Mag and 300 WSM ballistics. Keep an eye on your overall cartridge length since the RCM runs in a short action.
Each box contains 50 unprimed 300 RCM cases. Hornady packs these five boxes to a case if you're looking to stock up a larger quantity for an extended loading session.
Yes, brass cases are made to be reloaded multiple times with proper care. Trimming to length, keeping charges within published data, and good case prep all help extend their useful life. Starting with uniform Hornady brass gives you a consistent baseline for working up and tracking your loads.
| UPC | 090255867213 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 86721 |
| Caliber/Gauge | .300 Ruger Compact Magnum |
| Length | 4.7000 |
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