# Zeiss ZRF Range finding Reticle

Discussion in 'Long Range Scopes and Other Optics' started by victor, Jun 25, 2005.

1. ### victorWell-Known Member

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Dec 16, 2004
Hi All,

Does anybody have a zeiss scope with the "ZRF" Range Finding Reticle?
And can anybody explain how you determine ranges with it. What is the basic principle. How would you range a deer or elk with it?

Also if you do have one, can you please tell me how functional it is and wether or not you would prefer a different reticle after using it.

Vic

2. ### sscoyoteWell-Known Member

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Feb 26, 2003
It appears to be simply a ranging reticle system with a series of hashmarks that r supposed to range a 50cm. target @100, 200, 300, etc.- 600 meters. It is a series of lines in the right lower quadrant of the reticle, and u're supposed to bracket the 50 cm. tgt. (deer, i guess) between x-hair and each line, and simply read off the # of each line which is supposed to be multipied by 100, and that's the range. Nice for 50 cm. tgts. but for anything else u would need to recalibrate it once subtensions are known. Now, what u can do is simply apply a modified mil-ranging formula to use it (or any other reticle for that matter to range any size tgt. with any reticle subtension once the subtension is known)-- here's a link to an article that describes the "modified mil-ranging formula" or better yet let's just call it the "stadia-ranging formula" since it's not specific to the mil-dot.

www.ottllc.com/specialtypistols/sp20.pdf Part C) Reticle Rangefinding, Sections 1 and 2

Although the ZRF is nice, i prefer a reticle that provides downrange reticle zeroing, and windage reference as well. The ZRF could be adapted for both, but it would be difficult.

3. ### BuffalobobWriters Guild

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Jun 12, 2001
I looked over the article and it really covers a lot of the ground that gets asked about frequently on this forum. Nice work!

4. ### sscoyoteWell-Known Member

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Feb 26, 2003
THks. Bob-- there r a couple mistakes here and there that i'm gonna try and fix, but the concepts r sound,from my experience.