Re: TReMoR 2 Reticle Specifications
Some preliminary information, not well-described in the reticle spec, might help here. Let's consider the horizontal cross hair. Each 1 mil section (except near the center) is divided into four parts -- .2 mils on the outer two, and .3 mils on the inner two.
--|-.2-|-.3-|-.3-|-.2-|--
The first 1 mil section, from the center of the cross hair, is short by .1 mil and is missing the first .2 mil hash. So it measures out to this:
--|-.2-|-.3-|-.4- +
Staying with the horizontal cross hair, let's look at the length of the 1mil hash marks. Starting from the center of the cross hair, moving left, they start at .5mils tall, and increase by .1 mil until they reach .9mils. Then, it drops back down to .5 mils tall, and repeats. The chevron is at the .8 mil hash.
.9 .8 .7 .6 .5
--|---|---|---|---|--- +
The left, right, and top cross hairs are all identical to the above description.
The bottom crosshair is obviously a bit more complicated, but the *general* spacing is very similar to the above.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: XTR</div><div class="ubbcode-body">The vert staff below the cross has gaps that are spaced at .5 and 1, but the lines in between are at what, .2 so you have .2, .5, .8, 1, 1.2, 1.5, ... Huh?</div></div>
To find the pattern, follow the descriptions to the left of the bottom cross hair. The gaps are always .3mils apart, but used as indicators to mark vertical millings, starting at the top from .9mils, then .8, then .7.. down to .5mils.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: XTR</div><div class="ubbcode-body">What are the __ __ markers on the vert supposed to be? They are at like 2.3, 3.4, 4.5??? Is that supposed to be the 400/500/600 drops on a 308? If so what round and what MV?
I suppose 200/300 are supposed to be the .5 and 1.2 mil lines?</div></div>
The -- -- markers work with the gaps to serve as indicators. The .9 and .8 millings don't have them, but the rest do. Again, see the height descriptions that go from .9 to .5 and you'll see how those hashes are part of that.
This reticle is not a ballistic reticle in the sense that it's designed for one particular round.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: XTR</div><div class="ubbcode-body">The dots and the + on the tree don't line up with any mils so I assume they relate to some kind of windage at range system, but it would be bullet specific. They do line up in diagonal lines from the top to the bottom. What system applies?</div></div>
Forget the wind dots for just a second and let's consider the + and | marks between the dots. You'll notice that the | marks are always indicate 1mil. You'll also notice that the + marks only appear once in each side -- they're simply used to indicate the halfway point of the wind dots.
Now, let's look at the wind dots. The dots are designed to represent wind holds using the Accuracy 1st Wind formula. Unfortunately, I don't see that published anywhere. I believe each dot is supposed to represent some increment of wind at distance, but you need to run their formula to get the value for YOUR rifle.
One example, for a .308 each dot might represent 4mph of wind.
There are two dot sizes -- "Large" (.1 mil dia) dots at every 1 mil line of drop and "small" (.05 mil dia) dots between, at every .5 mil line of drop.
The idea here is to figure out what the dots represent for a specific distance and wind increment value for YOUR rifle. They're not designed around any particular round, but merely spaced based on the similarities of the effects of wind on different rounds. Horus has a nice wind dot calculator on their site that you can use to create a range card for YOUR rifle using the wind dots.
http://www.horusvision.com/tremor_wind_dot_calc.php
More information available on the Horus blog:
http://horusvision.wordpress.com/2011/04/15/how-to-use-the-h58-reticle-by-todd-hodnett/
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: XTR</div><div class="ubbcode-body">I get the 5 line chevron is for milling to 0.1 mil, that actually makes sense. But again with the staggered what I would call non-standard 0.5. 0.8, 1.0. 1.2, 1.5, 1.8, 2.0 spacing on the horizontal, yea, that's intuitive? (.5, .75, 1.0, 1.25, 1.5 would seem more logical to me)</div></div>
It definitely takes some understanding, but I think does it offers flexibility. If you need to mil range objects at unknown distances, they are rarely going to be an exact .25 mil increment. Doing some basic math, which gets easier when you know the markings and use the reticle more, gives you that flexibility.
.2, .3, 4, .5, .7, .8 are all very easy to mil, without having to count .1 hash marks.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: XTR</div><div class="ubbcode-body">It doesn't just jump out at ya, and say do it this way, that's for sure.</div></div>
Well, hopefully all of my typing doesn't go to waste and it helps you to understand the reticle a little better!
