I could not in conscience recommend a 243 Win. as a elk or bear rifle. Sure I know they can kill them, but you have to have a perfect shot. The one thing I didn't mention in my previous post, is that most my bullets...didn't exit...they were found on the far side of the whitetail deer. I'm a meat hunter...and prefer minimum meat damage. The deer didn't go far....but they left hardly any blood at all...if any. The Power Point is a soft bullet and mushrooms very fast....great for taking out lungs and heart and liver....but not good for leaving a blood trail.
I think the Hornady 6mm .243 100 gr InterLock BTSP and 6mm .243 100gr InterLock SP are great bullets for deer, impala, blesbok, springbok, mountain rhebok, common reedbuck, duiker, steenbok, klipspringer....but anything heavier...you'd be better served using a 30-06, .308, 7mm, 300 Win. .... something that has a little more mass and power in bullets. Bears aren't hard to kill...but they can be hard to find unless you get some great penetration. I have seen way to many archers hit the shoulder bone and just lose the bear to the woods. Archers are way better off....not crowding the shoulder at all on a bear.
Just my two cents