Thread: Zero MOA rail/base - why?

Originally Posted by gundoc

Most centrefire rifles are never used beyond 300 metres and .22's beyond 100 metres so there is absolutely no point in fitting an angled base as those ranges are well within the adjustment range of all 'scopes. In the past I have made adjustable elevation bases for special applications but they were very few. Long-range shooting is really the only use for angled bases.

Oh I have seen scopes that would not shoot to 100m on a 22lr. Scopes with less than 40 moa adjustment already unable to guarantee that it would zero at 50m, going from 50 to 100 meters neds about 9 moa which many scopes would run out.

While cheap guns are more prone to this problem, better guns and scopes are not immune.

I have a Zeiss V6 5-30 mounted on an anschutz 54ms. This scope has 60 MOA of travel. With 50m zero and a 30 MOA one piece mount, I have 40 MOA adjustment left. This means if I didnt have the 30 MOA mount I would have only 10 MOA left.