7mm/08 is ballistically similar but I have always loved the idea of the 7mm Mauser, since I grew up in the 70s and 80s reading the legendary Jack O'Connor books.
Arisaka ammo is seasonal like a snow shoe hare's white coat.
It's never been produced in a sporting rifle, only sporterized rifles.
Overshadowed in energy and ballistics by other rounds that are commercially produced.
Not quite obsolete, but not much of a future.