crash87 –
I agree the article wasn’t that well written. For example, they mentioned the ammo would be “affordable” but didn’t elaborate. That aside, the RCM cartridges are very welcome in my book.
For some time I’ve been predicting the .375 Ruger case would be “the” case for new cartridge development in the coming decades, for several reasons. The first reason is that the .375 Ruger case maximizes case volume in many “standard” (.30-06) length rifle actions without sacrificing magazine capacity when compared to belted magnums. Cartridges based on the .375 Ruger case may not keep up with the RUM and Weatherby cartridges, but they don’t need to in order to succeed, just as the .30-06 doesn’t need to keep up with the .300 Win Mag and its larger brethren in order to maintain its popularity. Looking down the road, the RCM cartridges provide us with a short-action case that is suitable for smaller diameter cartridges from .243 to .338. (I do hope they offer a .338 on a necked-down, full-length .375 cartridge, though.) With both the long and short cases available, the stage is set for more development.
The second reason is that, yes, the .375 Ruger and its shorter RCM siblings really are “manufacturer friendly”. While that may not seem like a big deal to you, it is to the manufacturers whose support is needed if the cartridges are to succeed. No new action lengths are needed, no new bolt faces are needed, and existing magazine designs will need minimal if any modification. Plus the cartridges will be SAMMI standard. In other words, manufacturers can adopt the new Ruger cartridges at minimal cost in terms of development and inventory. This was not the case with the WSM, RUM, SAUM, or Dakota cartridges.
Although it’s still very early, the .375 Ruger seems to be getting good acceptance. Having fired the Alaskan model, I say rightfully so. The new RCM versions in .300 and .338 will, I expect, gain a following with those who place a premium on short, handy, powerful and relatively lightweight rifles.
Will I be trading in my .300 Win Mag for a .300 RCM? Nope. If I was buying a .300 for the first time, however, the RCM would probably get my vote.