What caliber are you shooting?
Edit: never mind, I looked in your other thread. You'll want to factor in a 20moa rail also (at least eventually) to shoot a .308 to 1,000 yards. Otherwise you will be at the very limit of your elevation adjustment or past it.
Sent from my HAL 9000
I liked the vortex hst (was at bass pro just a bit ago) glass seems clear. I am just not sure if I should go with a first focal or second focal. I understand the difference that 1st the retical changes with the zoom and 2nd does not. 1st allows for you to still range at any zoom and 2nd does not.