JMHO, but I think if it is going to be on the list of the most popular it should be a factory chambered cartidge.
300WSM (had to list it cuz it's the one I now love
I can't speak for the other area's but these seem to be the MOST POPULAR ones in this area for people who will shoot past 300 yards. (long range is kinda subjective to area lol)
as opposed to the BEST LR cartridges.