I have seen a number of posts in various threads which state that a .44 Special or .45 Colt that uses 240-255 grain Keith style semi-wadcutter travelling at 900-1000 feet per second is a match for any animal in the lower 48 states. However, I haven't found a thread that discusses this exclusively, so I am starting this thread because I would like to hear more about it.
Here are some individual posts about this taken from different threads on this board that mention this topic: