So you’ve shot 1 Tiny Ten Animal. You didn’t answer the rest of the questions; What was it with, Number of Safaris, Locations/Outfitters, etc?
The best gun to hunt them is whatever you have in your hand when you see them. Small animal/small caliber makes sense, Small animal/big caliber defies logic but it works. I know a 22 in the right place will work great, we’ve all heard the saying a .22LR has killed more deer than anything else, but that doesn’t equate to the best gun. Ask you PH how many he’s lost with a small 22 type gun. Now ask him how many he’s lost and not found with the 375.
The best gun for me is small hole in, small hole out, dead right there. A 375 checks all those boxes, and of the 3 options I’ve used, it’s my favorite. Knowing someone who’s a good shot, does several safaris every year to Africa to a multitude of African countries that had a bad experience with a 22WMR on a Dik-Dik gives me pause. Having shot a lot of stuff with a .223 and .308 I know the type of exits I get on deer/coyotes/bobcats. I know the exits I got on T10 with the 308, so I suspect similar results on a .223 which are more explosive than NA Game. I’m expecting a bigger exit on T10 than NA game with a .223 because it’s traveling faster than the .308. A 308 on T10 produced a much larger and explosive exit on T10 than on NA game you’ve mentioned. I really think the issue is velocity and a T10 animals lack of muscle + thin skin that causes a lot of extra damage.