6,5x55.
500.000+ target shooters in Scandinavia cant be wrong.
Cheap 6,5x55 Lapua brass. Feeds very well in Mauser actions ( I am thinking of making one myself! )
I'd do a 'Swede in a heartbeat, on a long action. In my mind it's a well balanced chambering, long neck, plenty of oal latitude, and good barrel life.
