Re "interesting to see that more and more long range military sniper
cartridges base on big game rounds or original big game rounds used."

"I think we will see more of this in future"

If you add the 30 cal and 50 cal Sniper rifles to the following

338 Lapua = 416 Rigby
9,3x64 Brennecke = new russian sniper round
408 Cheyenne = 505 Gibbs
30 cal
50 cal

I think that you would have everything covered out to 2000 metres
or more and for most applications.

Maybe a Small calibre for Urban use but then you wouldn't be able to punch them
through walls.

500 Nitro