This is an odd question because it is in regards to an LPA ghost ring sight set up. There are TWO different height tritium front sights that I can choose, both differ quite a bit from my factory non tritium front sight. Neither front sights are adjustable and you are stuck with their stock heights and have to make all elevation adjustments with the rear. So either way, my zero is going to be off after installation so have to figure out by how much.
I am trying to figure out how much I would have to adjust the LPA's rear sight elevation to get close to the zero I was at before the front sight post swap (Benelli M2).
The stock front sight post height is .032 inches from its base to top.
The shorter tritium sight is .024 inches from base to top,
and the taller tritium sight is .037 inches from base to top.
So..... .05" difference for the taller sight from factory, and .07" difference for the shorter sight from factory sight.
Even though there will be more of an adjustment different between the stock sight and the shorter tritium sight, my preference would be to go with that set up since it has better protection from the front sight post wings where as the top of the taller sight is pretty much flush with the protective wings (so less protected).
Assuming an 18.5" barrel and 23" sight radius from rear peep to front post, what type of MOA differences are we looking at for each sight? ~6"-7" distance from eye to rear sight if that matters.
I'd like to preemptively adjust my rear so that the zero is as close as possible to what the factory was before fine tuning at the range. The annoying thing about the LPA ghost ring sights, is that they are set up for 1/3 MOA elevation adjustments, so counter acting a POI change at 50 yards or less is a PITA!
Thanks!