10m vs 6m rifle diopter sight dilemma

[Vic Thompson]

JMHO : I think that the problem that you are experiencing is to be expected and related to the difference in height between Bore Sight and visual Sight Line. On a Pistol this difference is typically much less than that for a rifle and the Muzzle Elevation difference accounts for the effects noted when shooting at Targets with varying ranges with each class of "Weapon".

One way to avoid making adjustments to the Rear Sight is to have two different height Foresights or maybe even using a Sight Raising Block under the Foresight at the longer ranges. By "scaling" you can calculate the amount of Fore Sight lift needed by measuring both the difference in impact points for the 6 and 10mtre shot targets (with no Rear Sight adjustment between shots) and the distance between Front and Rearsight. If you needed a Sight Raising Block that was a non standard height they can be made by someone on that well known Auction Site for a reasonable price. However, I seem to remember that Original offered two different Fore Sight heights and Sight Raising Blocks, made with the intention of switching as appropriate for each range with minimal Rear Sight adjustment required.

HTH,

Vic Thompson