If I have a good FFP MOA or MIL reticle (Numbered), I will also have my drops/drift listed in 25 yard increments on my gun.
I can either dial or use the reticle (Flexibility), and I don't have to worry about being on a certain magnification.
Ballistic turrets are fast
I also have some SFP...
Good Glass, Good Reticle (Different for different folks), Lit Reticle, and Zero Stops are all good stuff.
There are some really cool scopes out there, that have a combination of external turrets, FFP reticle. lit reticle, and internal information (Heads up display), where one doesn't even have...
Jack Of Adjusting All Ways & Master Of None...🙂
This is where I typically say, I can help you answer your question(s) better by a phone call than texting or typing.
It is just figuring out what is going to work best for that person, with that scope for that type of hunting situation.
Lapua is making 6GT brass-I have some.
Hornady makes factory ammunition as well-I have some of that too.
https://www.hornady.com/ammunition/rifle/6mm-gt-109-gr-eld-match#!/
https://ammoseek.com/ammo/6mm-gt/Hornady
I have no doubt you will have a exit with your bullet, given the speeds you are running.
Gemsbok (Another type of Oryx Gazella) in South Africa run close to 500 pounds.
Did you get one?
Budget?
The one I have has only one profile in the Bino, but you can have multiple profiles on the App.
They intentionally did this so as to avoid problems, like loading the wrong info in the Bino from the Bino itself
I would like for him to put 10-20 rounds down range for sure.
I'm trying to find a range nearby where he can shoot out to 500-600 yards or further.
Even 300-400 yards would be nice