The.338/378 is a waste of time in my opinion. I owned one before they became a factory option as wella s a .338 and a .340, which I liked the best of all.
The recoil is "rude", muzzle blast "fierce", and it will not kill any better than the .338 or .340 in the field.
I would recommend a more pleasant day with the .338 if you prefer the Sako rifles.
AGW