I currently have rem 700p in 300 ultra mag that has been altered to 16 lbs, mk4 rings and bases, mk4 16x scope and a vais muzzle brake
. Thinking of buying a 8.5-25x50 mk4 but don't have any experience with variable scopes. I shoot from 100 to 800 metres. what are your opinions of this scope and will it serve me better than my current fixed power scope?