I have a Chapuis double in .375" and love it, if you practice enough with it, you'll soon acclimatise to the recoil.
I concur with Namman on the Sako, I had a Finnbear once and bits kept breaking/falling off.
The 9.3x62 is a good round but ammunition for .375" at the moment is more widely available as are reloading components so factor this in when choosing,
The CZ550's are great rifles but see if you can get an "American" i.e. straight stocked model, I had a CZ in .416" Rigby with the European style stock, i.e. a lot of drop at heel which didn't help with perceived recoil even though they are heavy rifles.