I am biased towards the 10.75X68 because my dad used one in the 50's in India. Plain nostalgia & grief that he sold it when I was 12 years old....

The problem with this caliber in those days was poor projectiles & the 347 gr ammo loaded for open sights. In a scoped rifle, you should get great results with heavier Woodlieghs that are meant for the 404 Jeffry. Both are 423 cal. Theoretically speaking this should be adequate for normal hunting of all DG - it would be as good as a 416 within 100 meters - making up for lower velocity with larger caliber & similar bullet weight.