My Dad shot an Elk (in Colorado) at 80 yards, 3 times, nice tight ground in the middle of the chest with his 7mmMag. The Elk went back to eating. I handed my Dad my .30-06, one shot thumped it hard and it keeled over dead. I have seen similar with the .25-06 and .270 at close ranges.After shooting my Kentucky Elk twice at around 50 yards with 7mm Remington Magnum. These animals are really tough to bring down. I would have thought it would have rolled it, but it kept walking away. If I am in AK with Bears heck I would buy a bigger gun.
Not sure I would want to carry a 50 BMG, but I wouldn't mind having it.
I don't call that a gun problem, but a bullet problem. The bullets were going too fast and did not expand. They penciled right through. The .30-06 entered, expanded nicely and left a 2 inch exit hole.
Americans hunters have had magnumitis for years. But raw horsepower, if not matched with the appropriate bullet for the impact speed, won't anchor animals, just carry that energy through to the other side. My Dad also shot a Mule Deer buck at 300 yards with the same gun. Deer fell over dead and we never found any holes in the animal anywhere, but he still tagged it.