The only ones I have experience with are the 270 WCF, which will be 100 years old in 2025 and the 300 Win. Mag. that I think was formally introduced by Winchester in 1962.

I haven't played long range games in over 20 years....and that doesn't seem possible but, it is. Were I to participate again I believe I'd go back to the 300. Ever since my first in the early 80's I've had a fondness for that cartridge.

As others have mentioned there is a pile of cartridges just as good that don't make the list.

The 7 X 57 was never an official cartridge of the German military, in either war. Thet title belongs to the 8 X 57. So that argument falls on its face.