Eager to test out the MIL scale reticle, I mounted the SR4C on a 16 inch Larue PredatAR 5.56 using a Larue Tactical 30mm mount, zeroed the cross hair at 100 yards, and setup a course of fire using two 4 MOA targets each at 300, 400, and 500 yards and pitted it against the staple of rugged military 4x optics: the Trijicon TA31F ACOG. While the ACOG has an etched bullet drop compensator (BDC) from 100 to 800 yards, it is calibrated for a specific bullet traveling at a specific muzzle velocity. The SR4C’s MIL scale reticle allows more load flexibility, but it requires the shooter to remember the specific holdovers. Using a 100 yard zero, I found that I needed to holdover .5 MIL at 300 yards, 1.5 MIL at 400 yards, and 2.5 MIL at 500 yards. Numbers can be typed into ballistic calculators all day, but in the end hits matter. These holdovers are what got hits. Surprisingly the accuracy of the ACOG’s BDC fell off after 400 yards using 55 grain ammunition, and I had to hold halfway between the 400 and 500 yard marks to get hits at 500 yards. Once dope was confirmed, other officers and I took turns engaging all six targets for time. The SR4C’s horizontal MIL marks came in handy since 1 MIL of windage hold was required at the further distances. Since we were holding off for windage and elevation, the thick reticle lines were not a problem and did not obscure the targets at all. I managed a clean run, hits on all six targets in six rounds, in 22 seconds. While the ACOG’s marked BDC with thinner lines offers a cleaner sight picture and quicker holdovers, the combination of incorrect BDC calibration and no windage reference gave us a best time of all six hits in 29 seconds with no clean runs. The SR4C certainly had no trouble holding its own against the industry leader in medium range combat optics.
Next up – Part 4: Close Range Evaluation