THIS IS AIMED AT NO ONE SO PLEASE DON'T COME BACK AT ME!
I have seen a trend over the past Decade. For some reason bullets must be traveling at the speed of light or the round is useless and the 30-06 has become a varmint rifle. On the handgun side the .357 Magnum has also become a plinking handgun not worthy of self defense duty.
Some bullets work very well and better at slower speeds than others. The 30-06 for over 100 years has been stopping man and taking all kinds of game feeding the owner and his family. Then all of the sudden your 30-06 is just no good! You have to shoot a 300 Win Mag or a 300 RUM or that game animal is going to laugh at you and walk away. I don't think so especially with all the great bullets we now have. The 30-06 will still take any animal in North America.
Then there is the .357 Magnum. Every bear thread that comes along the conversation always escalates to the 44 Magnum, then the 454 Casull, then even to the 460 Magnum and 500 Magnum. Sure, all the super magnum calibers make for very good hunting rounds but most people can't shoot a 44 Magnum well let along a 454 Casull of the 500 Magnum. In these threads most of the times the people asking about bear defense are not shooters and can't handle the super magnums or even the 44 Magnum when loaded with a proper round for hunting. (I know we aren't talking about hunting but those are the best bear defense rounds) In those cases it's much better the hikers carry a .357 Magnum with the proper ammo than a revolver they can't make hits with. Sure a 44 Magnum would be better but sometimes a compromise may work better than what's best. I'm so tired of hearing "you're going to die a terrible death unless you carry this cannon or that cannon" so you might as well leave that plinker .357 Magnum home!
This is just my opinion and I'm not looking to argue with anyone.