Not to take anything away from the 303 (it is a great caliber) but in reading material such as posted above we should all keep in mind the quantum advances made since the time such was written! Much of the praise heaped on rounds such as the 303, 30-30 ect. in the late 1800's to early 1900's was in comparing them to rather anemic BP rounds. All these have their place and while there are often better choices than some 100 year-old workhorse neither can we afford to overlook proven performance!

Caliber choice is a personal thing. Asking someone else's opinion on "what's best" in a crowd of shooters is a sure way to start a fight!