People keep mentioning Bell and the elephants but it isn't really relevant to the way the heavy majority of people use the 7x57.
This is true.
The 7X57 is more than adequate for deer/pig/black bear, and some performance gains can be had in a stronger rifle.
I have run into the same "weak" argument with the .30-30, hearing stuff like "Only good to 50 yards". I've killed deer past 200 yards with one, and with a typical .30-30 load, not a supercharged spitzer-bulleted load.
I finally convinced one guy I hunt with a .308 Win is plenty for deer. He thought his .50-cal muzzleloader to be far superior, and had serious doubts about "that little-bitty' bullet.
