I have a Shepard on my Rem. 700 VLS HB in .308
In a word "Awsome". also a freind has one on his Ruger HB.
In my opinion there is no finer range finding retical, instant target acqiusition. The optic's are clear and bright. Leupold optic's are a bit better, but not that much.
They are life-time Warrentied.
I believe the only people that do not have kind word's for them are the people that did not take the time to read the "Instructions" and probly did not order the correct model for there caliber and load they intend to shoot.
Most people see the ad and think the thing zero's Itself, Be Realistic.
also it is the only scope I know of that stay's zeroed at all power's.
Click's are very precise.
One Flaw (No Target Turret's).