I f a person has hunted any type of medium or large game, it is not a big jump to hunting other types of game. They simply have to be shown where to put the bullet.
Negative ... lions, leopards and some species of bear hunt you back! Seriously, you wound a deer who cares, you wound one of the dangerous ones you have a whole new world where your skill sets are quite different, NOT SIMPLY as you have suggested. This is not a joke, these animals will kill you, and simply put, where to put a bullet on a charging lion that is a blur doesn't come simply! I have seen lions run so fast after stuff ... they are literally a blur, I am not kidding. Do not disrespect them by putting them in any parameter to compare them to hunting non-predators. That is silly by any means!
A broadside whitetail compared to a 1000 pound charging head-on Brownie, and you think it is the same?
No offense, but you may want to reconsider your thoughts with that one. But, and there always is a but in life, you still should develop the skills to handle such, as deer, and elk have attacked before. Just shooting a rifle means nothing to the skill sets we are talking about. One shot boom, take your eyes off the target to rack another, and then line up the scope ... NO, that don't work in the long grass or the elders of Alaska.
A lion can cover a football field in less than 4 seconds, at 20 yards we are talking parts of seconds ... you wouldn't even get your rifle to your shoulder. They are not like a car coming at you at 45mph, they are bouncing up and down whilst going side to side with each paw digging and kicking up dirt to launch, all you see is tawny colors and teeth! Bears busting out of the brush are similar ... a 'Joe' deer or elk hunter wouldn't even get a shot off or be in a position to do so in most cases. This is a hard skill to acquire, and it takes years to develop ... it is not something that should be excused with such disrespect...
This is where EXPERIENCE comes in!