Zeroing Windage on an Aldis No3 Scope

[Jacob]

Many thanks Roger and Surpmil!

I have had a look at my scope and it appears to be an unmodified model. I have a Purdey mount setup on my rifle with the adjustable base which I have maxed (or so I believe) to the left (the left edge of the front mount sitting about 2-3mm to the left from the centre line of the front base). This still leaves me with the need to aim off about 24" to the right at 100yds to hit the centre of the target (when aiming at the centre, the shots land off to the left as you would expect with a left side mounted scope). Will the base move anymore or is that usual for the amount of adjustment? I'm not expecting incredible things out of the rifle so I'm not that bothered if I have to aim off but would be nice to get it a bit more 'zeroed' if possible.

[Nigel]

When correctly zeroed the shots should strike about 2 inches to the right of the point of aim. This parallel aspect should be maintained at all distances. Whilst it is possible to obtain a point of aim / point of impact zero this will only happen at one distance and any greater distance will see the the point of impact diverging to a greater and greater extent as the range increases. It was the same with the Bren gun!