Good afternoon!
On the AR-Platform, a cantilever mount is indeed the advantageous mount to use, and will position the optic at an appropriate height for proper cheekweld, very typically without the use of any additional risers!
The Sport- and Pro-Series cantilever mounts in 30mm would be ideally suited.
https://www.opticsplanet.com/vortex-30mm-cantilever-riflescope-ring-mount-for-ar-15.html?_iv_code=VX-MT-CMT67-CM-202
https://www.opticsplanet.com/vortex-viper-extended-cantilever-mount.html?_iv_code=VX-MT-VPPD-CVP-30
Documentation on the reticle and the scope can be found on the left hand side of the main product page. Here is the reticle manual:
https://op2.0ps.us/pdf/opplanet-vortex-diamondblack-tactical-m-00209-0-moa-reticle-manual-pdf.pdf
These rings from Burris should work for your rifle.
https://www.opticsplanet.com/v/420162-burris-xtreme-tactical-picatinny.html
The accuracy is more dependent on the skill of the shooter and the accuracy of the rifle. Typically more magnification can aid the shooter in being more accurate.
This rifle scope does not have a zero stop.This is the description by Vortex for the turrets: "The Diamondback® Tactical scopes feature tactical windage and elevation turrets with Zero Reset making adjustments back to zero easy and quick."
These are manufactured in China to Vortex's specifications and standards.
Yes, all Vortex scopes are tested up to .50BMG.
The compatible cantilever mount listed is the Vortex Sport Cantilever Mount, 30mm, 1.50in Height, model SCM-30-150.
This Diamondback Tactical scope is built with rugged, shockproof construction designed to withstand recoil and impact, so it should hold up well when mounted on an AR-10 chambered in .308 Winchester.
On this optic, our Sport-series Cantilever, 30mm, is ideal!