I load the 140 Barnes for hogs in .308 and .30-30 for my Contender. I have shot a few hogs in the 200 lb range. Now, I probably would have had no problem with the Nosler BT I normally shoot for deer and paper, but they did the job admirably. I never recovered a bullet, but that's a good thing. Hogs are pretty dense animals. If it works for hogs, I would trust it for larger game.
In many calibers like .30-06 and on much of the game that is hunted with 'em, premium bullets aren't really necessary, but I like 'em anyway, why not? They're a little more expensive, not a big deal to me in a hunting bullet. They really shine when you wanna use a marginal caliber on larger game, they'll let you do that with good penetration. I'm not sure why you'd want to use a .223 on deer or a .243 on elk, but hey, a Barnes bullet will help you do that successfully.
I never liked Remington ammo or core lokt bullets, but to each his own. I'm sure they work. In normal, non-premium (or rather not controlled expansion), I've used Hornady Interlock (good penetrator), Sierra Game King (always superbly accurate and works on thin skinned game like deer), and Nosler Ballistic Tips. Accuracy, for deer, is more important than controlled expansion so long as the bullet weight is adequate. I've shot stem to stern, in the butt, out the neck, with a Nosler BT on a decent sized 8 point buck of about 120 lbs dressed (that's decent down here). If it'll penetrate 5 or 6 feet of venison, whadda I need a controlled expansion bullet for? LOL That Nosler is pretty impressive in 150/.308 Win on deer. I like the boat tail bullets for their BCs and accuracy. The Sierra, Hornady, and Nosler do that in normal bullets and the Barnes is a good high BC bullet in controlled expansion. BCs are down a bit on the Nosler Partition, but it's very accurate in 160 grain version in my 7 mag and good to over 300 yards anyway, so I'd probably tote that one if I ever get to go elk hunting. That, or just my .308 with the Barnes. Not sure I'd need more and that rifle is lighter to carry afield.
One thing I really like about Barnes is they'll expand rapidly even at .30-30 levels, yet will NOT lose bullet weight and will penetrate. Also, they're solid copper. A 140 Barnes X bullet is as long as a 160 grain lead bullet, but velocity is up with the 140 grain bullets due to the weight. So, with a Barnes, you're going to have penetration akin to a 160 grain lead bullet with the velocity of a 140....win, win situation there. Barnes bullets are pretty awesome.