Having shot both for a long time, it's clear the 338/340 would have the greatest spectrum of capabilities. It's advantage over the 300 is that it has more energy downrange at distance. And, at short ranges with smaller game, it will never make anything 'too dead', compared to the 300.
If you think you will have to shoot elk, moose or bear at many hundred yards, and know you can do those distances on the range because you've practiced, then go for the 338 or 340. Otherwise, the 300 WinMag is the best all-round choice.
With the 300, if you are after smaller game, hand-load with 165gn Ballistic Tips and the lowest feasible powder charge that's accurate in your rifle. If you're after moose or elk, use 180- or 200-grain Noslers or Hornadys at the biggest safe charge that's accurate for your rifle, and stay under 100 yards. You'll be fine with that.
The farther away you think you'll be shooting bigger game, the more you will need a faster, flatter-shooting rifle with heavier bullets. However, if you just like larger rifle calibers and can shoot them well, then that's OK too.
|