Yes I've got many loads that shoot the same, in the hornet my Vmax load shoots .2 at 50m and the 40gn spear SP shoots, dead on at 50m, but my subsonic and 1500fps loads shoot way lower so it makes sence to have a second scope just for them.
Then with the 30-06 my stalking sxope is a 2-7x36 Kahles, Ut if I want to hunt on open country with long shots then having say a 3.5-18x Swarovski with custom turrets might be the go.
Or if you also want a thermal or NV scope for that rifle as well.

But the number 1 reason I like to have multiple scopes in qd rings on my rifles is if something happens to a scope when away on a trip, I can just swap them over in a second and I ready to go one.
I actually need to find a 1" blaser saddle mount to put my last spare 2-7x36 Kahles in as a backup scope for either the 30-06 or 22 hornet.