Interesting but what is missing is that the 7x57 was designed to shoot a long, heavy (175 gr) cup and core bullet at moderate velocity to open up 2 calibers and penetrate forever. The 270 WCF was a hotrod for medium game using a 130 gr bullet that would open up quickly and kill w/o much penetration.
Either can be reworked to mirror the other with today's bullets and powders, given the limitations of twist issues.
So, today, outside of enjoying it, there is really no reason for a debate.
Just a guess, but I think Shrapnel was doing a mild dump on the short action lunacy by men who are generally a bit chubby. Happily all the shorties have died except the 300 WSM which does nothing a 300 WinMag won't except feed poorly and have hard to find ammo.
Own 3 7x57s (no.1), 2 270s (M70 & No.1) 1 7mm08 (Marlin)
and all work fine and with proper handloads are redundant.
7mm08 stainless is on the block as it's boringly perfect.
Always loved Finn with his 375 H&H wearing a K 2.5 in Weaver mounts which, we all "know" is a lousy rig.
