From the specs:
Reticle Focal Plane: Second Plane
Received mine on 04/16/18 and it does have a sunshade.
Yes it does.
That particular model of the X1000 series scopes has a very slight edge in lens quality/clarity, but I wouldn't say it's enough to make up the difference in cost between them. The value for quality on the Strike Eagle is excellent.
The Vortex Switchview Throw Lever model SV-5 should work for the Vortex Strike Eagle 4-24x50 Rifle Scope.
The Vortex Strike Eagle 4-24x50 Rifle Scope could be used to shoot that distance with a .308. Shooting that distance also depends on a lot of other factors such as the conditions you are shooting in, the ammo you are using as well as the shooter and rest you are using. However, the Vortex Strike Eagle 4-24x50 Rifle Scope is capable of being used to shoot that distance. However, I recommend considering using the Vortex Venom 5-25x56mm Rifle Scope at the link below because it is a FFP scope and not an SFP scope.
https://www.opticsplanet.com/vortex-venom-5-25x56mm-riflescopes.html
The Vortex Strike Eagle 4-24x50 Rifle Scope has up to 24x magnification. Seeing out to 500 yards should not be an issue.
The Vortex Strike Eagle 4-24x50 Rifle Scope will work with that rifle. I recommend using the Vortex Rings at the link below to mount the Vortex Strike Eagle 4-24x50 Rifle Scope. You will need the 30mm diameter 1.26" set of rings.
https://www.opticsplanet.com/vortex-precison-matched-riflescope-rings.html?_iv_tube-diameter=30-mm&_iv_ring-height=high-1-dot-26-in-1
The Vortex Strike Eagle 4-24x50 Rifle Scopes do have zero reset turrets.
Yes, the Vortex Strike Eagle 4-24x50 Rifle Scope features Windage and Elevation dials that allow you to reindex the zero indicator after sight-in without disturbing your settings.