Re: opinions on the Horus H37 reticle
The Horus Falcon scope with the H37 reticle gives about the performance of good quality target scope with generous vertical drop capability. It's most impotant feature is that gives the precision of target knobs and click counting without the need to turn knobs or count clicks.
he process of determing the horizontal and vertical offsets needed are essentially the same as with target knobs, but you simply place the target at the appropriate location on the mil grid. The accuracy achived is the same as with target knobs but with less chance of making errors in counting clicks or getting lost couning turns. Because you can see the entire field of view and see where your scope's zero is relative to the target it reduces the chance of making dumb errors, such as turing the knobs the wrong direction.
The H37 is not a ballistic computer, it's not a weather instrument, it's not a rangefinder (at least no more than a mil-dot scope). To use it you need either lookup cards for your ammo and environment or a ballistic computer. Thats no different from what you need for a scope with target knobs. As with any long range scope you still need to be able to measure or estimate crosswind, inclinations, and air density effects.
So the benefit over target knobs is mostly speed and (in my opininion) lower likelyhood of making errors. An additional benfit is being able to rapidy measure the error in mils between the point of aim and the point of impact. Making corrected followup shots is much easier than with target knobs.
The Horus Falcon H37 scope expects to be on a 20 MOA tapered base relative to the bore. The only use of the scope's elevaton and windage knobs is to zero to scope on a particular rifle. Those are not changed in normal use. If quick disconnect rings are used it's easy to move the scope between rifles. Just zero the scope for each rifle and mark the zero setting for that rifle on the rifle's range card. It only takes seconds to restore the scopes zero.
The Horus Falcon has an illuminated reticle but it really doens't allow the use of the Mil- grid features. It's about like having a mil-dot scope for simple holdovers. The parallax adjustment works like any decent scope and the scope has a good diopter adjustment range.
I like mine well enough I bought a second one. I keep one with 20 MOA rings and one wiht zero MOA rings to use with different rifles.