The older and "more wiser" I got, the more I learnt to lean towards the slower and heavier bullets when I want to bring'm down now.
Back 20 years ago, we had cartridges that were too fast for the bullets available, causing lots of blow-ups on the hide. As Barnes, etc. developed bullets to handle the speeds of the day, the designers just kept pushing the velocities higher. Now you have items like the TSX, and there are still cartridges that are too fast for the bullets. A bullet has a "functional velocity" that it's designed for, and on either side of that velocity range it's not going to work perfectly, so the ideal reloader/hunter with a ".30 Super....." would carry maybe three loads in his pocket while hunting, one load for up to 100 yards, another for 100 to 250, and the last for the long ranges when the bullet would be losing serious velocity.
So, was Jack or Elmer right?
Jack hunted open areas in the southwest, typically Arizona, where you had to make 300 yard shots. one had lots of open area for 2nd and 3rd shots.
Elmer preferred the heavy timber, with an average of 75 yards, and if the game wasn't anchored, it could be lost.
I hate chasing wounded game, so prefer to get in close and "sledgehammer" it.
For Dangerous game, the rule has always been " 400 grains at 2100 fps will stop anything", and it still applies. Look how many have rediscovered the 45-70 and the wallop it delivers to game and the bloodtrail it leaves behind.
.....Tells you something!
~Arctic~