This a good scope for long range shooting; but I recommend it for lower recoiling rifles. Focus was good throughout the power range. The Adjustable Objective kept it parallax free. My main concern is shooting at the highest power on a heavy recoiling rifle. The eye relief starts to reduce quickly. On heavier recoiling rifles there is a chance for the scope hitting your eye. I mounted it on my 300WSM first, but transferred to my 260REM.
Pros: Huge magnification range, very durable
Cons: Short eye relief at higher powers
This review was written in the old system and had content requirements that are different than reviews written today.