Being new to shooting using a scope I have found this one to be simple, rugged and easy to adjust . I have it on a Ruger American in 308 and once I used a little loc-tight  I have no worry about it moving .  My only complaint if you could even call it that was there were no scope rings included with the scope .  But with this set up shooting off a bench I have a .75 to 1 MOA rifle with the right ammo so for the price I can not complain .