and to also establish an aiming point at various distances. Let’s review them now.
STEP 1: ESTABLISH RETICLE MEASUREMENTS:
I set up a target for the initial mea-
surements. This had a 4-inch square in the center and included 1-inch squares marked above and below the center. I placed this target at 25 yards (confi rmed with the rangefi nder), which just hap- pened to be the distance between the thick and thin lines of my 6x scope’s Duplex-style crosshairs. (Note that Red- fi eld labeled their Duplex-style reticle as the 4-Plex.) At this close range I was able to
This target, set at 25 yards, is used to establish reticle measurements for the author's Redfi eld scope with 4-Plex reticle when set on 6 power.
see the 1-inch line marks on the target easily enough to note my measurements. I found the distance from the center of the crosshairs to the edge of the thicker vertical “plex” to be 1.5 inches at 25
yards. This became ranging point A. Thus, the distance from the top of the lower duplex to the bottom of the upper duplex to be three inches, and I noted this as aiming point B. I also was able to measure the distance from the thin horizontal crosshairs to the bottom of the eyepiece, which is ranging point C, as illustrated. STEP 2: MATHEMATICS
Now is the time to compute and
make note of the reticle’s measurements at extended ranges, as shown below. Again, keep in mind “A” measurement is 1.5 inches at 25 yards. Yards
100 200 300 400 500
A = 6" 12" 18" 24" 30" The “A” measurement will prove
to be the most instrumental and useful portion of the reticle in my testing. STEP 3: RANGING
Fortunately, I have a life-size coy-
ote target on hand. (Thanks to V.H.A. and a couple of Mr. Coyote contests!) On the target, the total height of the coyote silhouette from the back to the bottom of the feet measures 20". The total height from top of the back to the bottom of the belly measures 10" and the legs are 10" long. As long as I’m confi rming mea-
surements here, I might add that I also had compared the target coyote’s size with a couple of actual dead coyotes that I killed last winter. Sure enough, the measurements were almost identical! I set up the coyote target and taped
a target on its shoulder kill zone. I then backed off to the distance desired (con- fi rmed with rangefi nder) and got my rifl e into position. As I then sighted through the 6x
scope I would see how the total 20" of coyote body height, including legs, would fi t within the various lines of my Duplex reticle. I took notes on what I found. I am enclosing the results of the
ranging view from 200 to 500 yards, as sketched individually while in my shooting position. STEP 4: SHOOTING TO CONFIRM TRAJECTORY AND ESTABLISH THE AIMING POINT
After sketching the ranging image
I then would fi re two shots at the bull’s eye, go measure the point of impact on the target, and then return to the shooting position again and align the
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