A friend is using one I think it is 4-16. It is giving him a good service shooting a sporterized mauser 6,5x55. I have seen him shoot up to 470 m.
Optics are good, but lower than the top end scopes.
Adjustments are ok ( 1/4 MOa, I like mils better) but today we were at the range and he has had trouble to make the elevation work.- he dialed up and it did not move.- Maybe it was his fault.
The parallax adjustment is in the objective and I like a third turret better.
He has been using it for approx. 2 years in rough country, has caught rain and works well.