I have a somewhat different way of choosing a scope, it’s not what scope is best for the calibre, it’s what scope is best for the hunting that I will do with the gun.
My .375 H&H has a Leupold VX-3 2.5-8x36, (so does my Lightweight .270 win), because it’s a light and versatile scope that can be mounted low, these are multi use rifles for me but my .375 is not my dangerous game gun. My .404 Jeffery has a VX3 1.5-5 again because it’s light and I can mount it low, which is important to me on a dangerous game rifle which has to fit well for quick shooting with either iron sights or scope (I tried a Swarovski Z6i 1-6 but it was too bulky).
My point is, don’t base your choice on the fact that it’s a .375 H&H, base it on what your going to use the rifle for. In your case you want it to do everything so I’d vote for a low power variable like the Leupold 1.5-5. My reasoning is that you will miss out on some deer at long range or in low light with that scope but I that is better than missing an angry Buffalo at 10 yards as you may with a higher powered scope. It’s nice to say that you’d use a higher powered scope in QD rings and take it off if need be, but thats making the assumption that you’ll only have a close encounter with an angry animal when you expect it......
QD mounts are still great though, you can have a couple of scopes in QD mounts to suit different hunts for Brno/CZ rifles I personally like the Alaska Arms mounts, just call and order directly from them, Talley mounts are good too)
Sorry for the rambling reply, enjoy your Brno