there is no better hunting (as opposed to stopping) rifle for dangerous game than a Model 70 in .458 or .375.
Do you refer to caliber choice, action type or mag capacity ?
Mag capacity makes some big difference with the CZ but (IIRC they allow you 2 more rounds) though it allows the rifle to be some handy. I'd like to have one more round in the mag for driven hunt purpose in my neck of the world.
I refer to all of the above.
1. I like bolt rifles because you have to have a scope to identify bullet paths through the
jesse some times. Also, there have been times i needed more than two shots. Yeah you can scope a double, but it's often a hassle and hard to get it low enough for a good cheek weld.
2. Having shot one each hippo, elephant, and buffalo with the .375 and .458, I think both are adequate. Penetration is sufficient with the ,375. I killed a buff with a bang flop with a .375. The .375 can be used more readily for plains game than the .458. I read about a guy who got killed in a close buff charge while hunting lesser kudu. You don't take a .458 on a lesser kudu hunt but you can take a .375.
3. I have had, however, two situations where I would have appreciated one more round in the magazine than the Model 70 carries.