I have a Winchester 74 with a No.42 scope fitted. It has the vertical post and single cross-hair. The Parker Hale mounts do have provision for windage adjustments so it is quite straightforward to zero. There are two zero points for elevation - the first where the bullet crosses the line of sight and the second when the bullet passes back through that line of sight. The crossing points are partly determined by the height of the sights above the bore. I have a pre-war Mauser .22 with high mounts/rings so that the bolt handle clears the scope. The crossing points are 25 yards and 50 meters. Quite handy when shooting on an indoor range and then taking it outside for running boar. I can see that the Winchester 74/No.42 combination would have been very effective and quite sturdy.