Greetings Passagyrs,
Khomas Highland Hunting and Fishing Safaris of Namibia,welcomes you to the greatest forum on earth.
I have no experience with Sabatti rifles and so unfortunately, I cannot help with that question.
If however, you decide to bring your bolt action .375 for Buffalo, or a buff plus “plains game” type of experience, I recommend Swift A-Frame bullets, in 300 grain weight.
They’re hard to find now but worth it when located.
Last but not least, although I also have zero experience with the outfit you have booked with, indeed their reputation is A+.
And so, I am confident that you will experience a wonderful time with them.
Cheers,
Velo Dog.