It exists ...

... the Swedish SAFN in 6,5x55:

DigitaltMuseum

Wouldn't that be neat, and a tack driver too.

Was this a prototype - and the only one made? :dunno:

Five were made in 1949/50.

Only one Rifle was made in 7,5 MAS for Syria. And if the Swiss rifle really was made is one of the last mysteries.

Looks very good!

The interesting one is the 6.5x55 FN-FAL