I have the exact same scope in the VX-III and I love it, I have never hunted with a scope with an objective over 40mm so I can't chime in for that.
BUT, before you order your dial custom to the load your are shooting make sure that you shoot through a chrono machine to get your exact FPS with your bullet you are shooting. If you hand load you will most likely already know this. When I ordered my turret I was told that the FPS on the box I was using should be close but with more investigation on some other forums and advice from other members (jamieb and josht) on here I found that is not going to be very accurate. I chose to just order an M1 turret and went out and shot my 'drop chart' for myself. I was fairly close to what the FPS on the box would have been but enough off that I am glad that I did not order the custom turret. Plus if you should choose to place the scope on a different caliber rifle you will be able to create another drop chart without having to order another turret.
If you decided to shoot your gun through a chrono you could option to get the custom mil-dots places in the scope eliminating having to have an adjustable turret. Especially if you are going to be sliding it in and out of a scabbard. My M1 tends to get snagged in my backpack I found out.

Good luck, hope this helped.
Jordan