two

or three

.375 Flanged Nitro Express 270 grains bullet + 40 grains powder

9,5x56 Mannlicher Schönauer 270 grains bullet + 45 grains powder

and

.375 Rimless Nitro Express 270 grains bullet + 43 grains powder
maybe a tropical load of the original 9,5x56

for making things not so easy my mannlicher 92 in .375 Flanged is proofed for 40 grains powder and a 320 grains bullet

new made kynoch ammo is 2-3 mm to long to fit into the action. its possible to reduce oal with the seting die.