Reticle-Rangefinding Fun at the SP Shoot
In the handgun threads below Ray Prager killed a couple PDs at very long-range with his Contender couple weeks ago. While we were shooting i had the opportunity to play with reticle-rangefinding some. We had set up a 1000 yd. tgt. that day, and while we were shooting somebody asked how big it was. We didn't know, but playing with the mil-ranging formula i knew we could get a rough estimate by leaving the tgt. size as an unknown in the formula. We cranked up the power of his Burris 8-32X BD with Ballistic Mil-dot to 32. I had a 500 yd. silhouette set out to use as a std. since i knew it's dimensions. The MD subtension was calcd. to be 2.1 inch per hundred yds. @ 32X. So i bracketed the big rectangular steel in the optic and took a "mil reading" @ .9 of a mil. I then plugged it into the mil-ranging formula using 2.1" as a "subtension unit" instead of the mil-std. 3.6". Here's the equation--
X" x 100/2.1/0.9=1000
when we got to the tgt. it measured 19.2. I couldn't believe it. .3" variation @ 1000 yds. That was just amazing i thought.
A doe antelope then came trotting thru the PD town. I quickly lasered her @ 362. I looked thru Rays rig again, and took a quick guess at 1.8 mils. Figuring 14" back to brisket here's what the range came out--
14 x 100/2.1/1.8= 370. Man, this stuff is fun to play with.
At Rich Mertz long-range HG shoot there was a 24" silhouette set at 500 yds. Using the TMR reticle in my 8.5-25X Leup. it reticle-ranged right at 490. That was fun too. This stuff is sure fun to play with--sort of adds another dimension to shooting.
Interestingly i measured 3 of the adult dogs that had been shot and all 3 were 3.5 X 11". Next time i'm gonna play with reticle-ranging them if i can see them in the grass well enuf.