Phil and Bill, You are not saying anything I did not say in my first post.
THEN I LISTENED TO Gresham's PODCAST.
It has nothing to do with ownership, it is about the PRACTICALITY of using hugely recoiling cannons, when most people shoot much better, and have a much better chance of a clean kill, with lighter recoiling calibers.
The answer to what the OP ACTUALLY is asking is NO, if all you have is Grand Dad's 30/30 You have all the rifle you need TO MAKE A CLEAN ( humane ) KILL. You do not need to beat yourself up with with a .50 BMG to drop Bambi.
Obviously there are exceptions for long range, or African game.