For .308 this scope is a great choice. I'm using this exact same scope on my M&P10 and it's doing the job just fine. Most of my shooting is between 100 and 300 yards so I feel qualified to answer your question. I like the Vortex line of scopes. The build quality is up there and if you experience problems, they'll back the product. Good luck!
^..^~~
No, it does not.
I would recommend using the Evolution Gun Works HD Montana Rifle 1999 Picatinny Rail Scope Mount and any set of high height rings. My personal recommendation would be the Steiner H-Series Lightweight Rifle Scope Rings. Both the base and rings can be found by using the links below:
https://www.opticsplanet.com/evolution-gun-works-hd-montana-rifle-1999-picatinny-rail-scope-mount.html?_iv_action-length=short-action
https://www.opticsplanet.com/steiner-h-series-lightweight-riflescope-ring-30mm.html?_iv_ring-height=1-dot-35-in
To mount the Vortex Viper HS 4-16x50mm Rifle Scope to a Remington 700 SPS Tactical I recommend using a set of high 30mm diameter rings. If you have a picatinny scope base the rings at the link below will work.
https://www.opticsplanet.com/vortex-precison-matched-riflescope-rings.html?_iv_attachment-mount-type-1726386052=picatinny&_iv_tube-diameter=30-mm&_iv_ring-height=high-1-dot-26-in-1
The Vortex Viper HS 4-16x50mm Rifle Scope does come with Vortex's 50mm sunshade.
The Vortex Viper HS 4-16x50mm Rifle Scope is compatible with custom turrets. These turrets can be purchased through Vortex and are made by Kenton Industries. I recommend contacting Vortex for more information regarding these custom turrets.
If running a 1-piece picatinny rail atop your X-Bolt, a set of the Pro-Series 30mm low-height rings would be ideally suited, PN# PR30-L.
Here is a link: https://www.opticsplanet.com/vortex-pro-series-30mm-riflescope-rings.html?_iv_code=VX-RR-VRPRR30-PR30-L
Adjustment Graduation 1/4 MOA
Travel Per Rotation 12 MOA
It is manufactured in the Philippines.
Yes, this scope will withstand a .300 round. And yes you should still get a clear image at 16x.