HorseSoldier, no, I'm not implying that a .45 ACP is just as good as a .458 Lott. If you had taken what I said into context, you would have realized that.
Instead, you took one sentence from my entire post and used twisted "logic" to try to make yourself look better. Your statement that .45 ACP = .458 Lott is a red herring and you know it. The .308 Win and .300 Win Mag are separated by about 400-500 fps, the .45 ACP and .458 Lott are separated by well over 1000 fps and the bullets are of a completely different design, ballistic coefficient, and sectional density. Meanwhile, the bullets used in the .308 Win and .300 Win Mag are almost completely identical.
I said that the .300 Win Mag does not significantly outperform the .308 Win in terms of game killing power. Both have sufficient velocity to put down any black bear or elk on the planet at reasonable hunting ranges (300yd or less, as I said in my previous post). Any game animal hit with either of these caliber will die, almost instantly if the shooter does their job. No animal will live simply because the 165gr .308" bullet was going 2500fps vs. 3000fps.
This is true across all of the .30" cartridge debates. Pure speed doesn't kill. Yes, a decent velocity must be achieved in order to attain sufficient penetration. But the .308 Win does that very well at ranges less than 300yds.