I have never understood the rational behind the whole short fat thing
In the comparison of a 338RCM and 338-06, that's the difference of 2.840 and 3.340, if both are seated to max OAL, 1/2". Literally jackschitt.
I can't address the short fat vs long skinny, but ...
A Winchester/Mauser action and 3 position safety in a 20" SS/SYN rifle with iron sites and 338-06 ballistics for <$600 guts feathers and all is why I bought it.
Let's see cheapest I could get into a 338-06 is $200 Savage plus $300 for a rebore or new barrel or a $500 Armslist gun plus shipping...
No contest. The biggest issue is the proprietary cartridge. I've made 338RCM brass from 375Ruger and 300RCM. As long as one of the 3 are made the gun will have life before needing re-chamber.
With the 338 Federal flagging maybe it's time Ruger cleaned this cartridge up and marketed it for what it is a smart all around cartridge, instead of a short fat 338WM which it ain't.
Steve
Oregon