Re: Rangefinder for ELR
Now I’m no expert on this extreme long-range rifle thing but I’ve dabbled in it some.
As already mentioned the use of a graduated reticle (Mil-Dot) at ranges in excess of one kiloyard is pretty futile in my experience. Below is an example.
It would appear that the 48-inch tall target subtends 0.9 milradians.
(With mirage and target obscuration getting the measure any closer is beyond me.)
Using the WORM formula the range appears to be 1,481 yards.
The actual range is 1,500 yards.
Now the range determined is almost 99% accurate.
(Pretty good for an amateur I’d say.)
It still represents a 20-yard error in range.
This would result in the center of my 20” diameter shot-group being placed 19” below my point of aim.
The odds here favor a miss.
If you want to hit at extreme ranges you’ve got to use a good (expensive) laser to determine range.
I use the PLRF-10.
Please keep in mind that I’m just a hobbyist and my opinions are based upon limited experience and training.