According to the Horus website, the H58 is graduated in mils. I didn't know that and was wondering what they based the reticles on.
As you can probably tell, I'm just a bit biased against reticles of this type for exactly the reason that Roy brought up and buano brought up in that latter part of his post above, even though I shoot an NPR1 on an NF. Way too many people thinking that because they have this or that special reticle, they can shoot out to 600 or 1K at a game animal.
What a misconception and shame on some of these companies for marketing the way they do--often not mentioning the devil in the details in terms of time spent training, knowing ballistics and using a ballistics calculator when needed, proper equipment, etc. Longrange hunting is a fine tuned 'system' with a tremendous amount of knowledge of details of that system (most importantly knowing your limits in a given conditions), not just a special reticle.
Most factory rifles are not designed with shooting at 600yds + in mind and some of these reticles make folks think they can do it.
How long could it be until MSNBC does an investigative report on hunters using ballistic reticles (instead of remington)? I'm sure they can find quite a few folks happily using them that don't have much of an idea of ballistics at all.
Sites like this will really educate people to this end if they are willing to spend the time, energy and money to do so. Hopefully they won't be shooting lr if they haven't spent that time, money and energy to understand what is going on to some degree--it's tough enough when you have some understanding.