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Can you judge distance on a fine duplex

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/25/2006 at 16:46
macky View Drop Down
Optics Apprentice
Optics Apprentice

Joined: February/20/2006
Location: United States
Status: Offline
Points: 122

I'm liking this scope ...for a .22-50 that will be used at a 100 yard range maybe 75% of the time and the remaining 25% of the time will be small game hunting with shots between 50-100 feet and 150 yards.


It has all the features that I'm looking for EXCEPT (of course) ..... I have no depth perception and I need a way to judge distance using my scope.  Can a Fine Duplex be used to do this?  Is there a specific distance between the posts at a specific range with a specific power?  If not, I'll continue looking


LEU55152 Leupold 6.5-20x40 VX-III E.F.R. Riflescope Leupold 6.5-20x40 VX-III E.F.R. Riflescope
  • Matte
  • Fine Duplex
  • 1"
  • E.F.R
  • Target Knobs
  • Adjustable Objective
  • Free 2.5" Sun Shade w/ Purchase
  • Index Matched Lens System
SWFA: $599.95
More Info... Buy Now

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/25/2006 at 18:45
Dale Clifford View Drop Down
Optics Jedi Knight
Optics Jedi Knight

Joined: July/04/2004
Location: United States
Status: Offline
Points: 5087

Second focal plane scopes do not have a reticle enlargement with an increase in power setting and can be used for range finding. thus the distance between the horizontal on a duplex leo to the point of that duplex will subtend 18" at 100 yds. (go to the leo website to make sure).  Some VXIII, I have 3.5X10, that when the 18" of a deer sized animal is "powered" into the reticle the distance can be read of the power adjusting ring.

After reading several of your posts- I think you should look at something like the 440 yd rangefinders. They prices have come down -and it is possible to find them used as people trade up. Then you can use the rangefinder to find the distance of smaller objects, and then "calibrate" your own scope to that power setting.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/25/2006 at 23:06
sscoyote View Drop Down
Optics Journeyman
Optics Journeyman

Joined: October/05/2004
Status: Offline
Points: 327

I use a modification of the mil-ranging formula that allows for ranging with any reticle with at least 2 points (stadia) in it. If u access this on-line article and study Item C) Reticle Rangefinding it will describe the system i use. Reticle ranging works OK for game, but sometimes u'll come up with gross errors in ranging that'll make u sit there scratching your head trying to figure out why. The system really requires some studying to really understand the concepts, but is fun if you're into that sort of thing. I think the subtension of the "thin opening" of that reticle is 2.5" @ 100 yds. @ 20X, and 8.5" @ 6.5X.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/26/2006 at 11:40
Urimaginaryfrnd View Drop Down
Resident Redneck

Joined: June/20/2005
Location: Iowa
Status: Offline
Points: 14332 .htm


Judging distance with VXIII scopes works on Deer size game. with duplex reticle you frame the deer between the center of the crosshair and the wide heavier portion of the  crosshair.The white number on the shooters side of the power ring 2,3,... correspond to 200yds 300yds etc.


Mil Dot and the Tactical Milling reticle can be used with other known sizes and a MILDOT MASTER will help. The  EFR scope will focus down to 10 meters. Where the the "Long Range" scopes usually only focus from 75yds out.  A 20x Super Sniper will focus down to about 10 meters also and is mil dot but unless you have a solid rest it will be tough to hunt with. My SS 20X44 is very touchy as far as what is in focus at these closer ranges.

I really think that most small animals are not going to stay put long enough for you to do the math with a mil dot. I would recommend you get a laser rangefinder for your distance estimation.  If you were going to hunt the scope a larger percent of the time I would say buy a lower power but you will enjoy having the 20x for targets and 6.5 is quite usable for hunting.


If you feel that you have to have a Mil Dot ask SWFA about custom ordering the EFR scope from Leupold with a MIL Dot It might take a little while but I'm sure it could be done.

Edited by Urimaginaryfrnd
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