That video was taken in November 2011 at the Trident Concepts Carbine Course 2. I was using, testing, and evaluating the Swarovski Z6i with BRT reticle and ran it on 1X the whole time. It was slightly slower than an Aimpoint Micro T-1 0-50M, but I have thousands of rounds and repetitions on Aimpoint sights. I was using a LaRue Tactical 16" 7.62 PredatAR with Surefire Muzzle Brake. I am not a fan of muzzle brakes but it was a company rifle and ran what I had. I have shot 7.62 PredatARs with standard A2 flash hiders and the brake helps some, but if using a proper stance etc. the recoil reduction is negligible. You can be a little sloppy with your stance etc. with 5.56, but you can not be sloppy with a 7.62. You can run a 7.62 LaRue Tactical PredatAR and PredatOBR almost as fast as a 5.56 carbine, but you have to man up and bring your "A" game. If you allow yourself to get a little sloppy your shot placement will reflect it.
The Modified Navy Qual for the TRICON Carbine and EAG Tactical Carbine courses is shot five rounds standing, reload, five rounds kneeling, reload, five rounds prone with a time limit of 25 seconds. Scoring is fairly simple. Everyone starts with a "0" (the lower your score the better). For every miss out side of the 8" circle it is +5 points (rounds touching the circle count as a miss). Misses off the human silhouette target is an automatic DQ. Every second over the 25 second par time is +2 points. Every second under the par time is -1 point. Theoretically you could shoot a negative score, but you better bring your "A" game. A qualifying score is any thing under 40. Marksman 26-40. Sharpshooter 10-25. Expert 0-9. Anyone scoring a 9 or less is a hard mofo.
I recently took the Trident Concept Mid-Range Marksmanship course with a 14.5" 7.62 PredatOBR and a Leupold CQBSS, as well as an Aimpoint Micro T-1. The Micro T-1 4 MOA and Leupold CQBSS allowed me to shoot just as accurately at 100 and 200 meters, the 7.62 carbine shot sub-MOA with XM118LR and ASYM Precision 168gr ammo. It may surprise some people that you can shoot sub-MOA with an Aimpoint Micro T-1 4 MOA, but "optics don't help you shoot better they only help you see better." (LtCol Jeff Cooper, USMC). Accuracy is a product of the rifle, ammo, and shooter. I do not profess to be a precision rifle shooter, but the 7.62 PredatOBR and ammo combo were performing very well. I was able to shoot a 1 1/4" three shot group at 500M with the Leupold CQBSS and XM118LR. Morebadhabits_tx shot beside me with a 16" 5.56 OBR with 4X ACOG and 77gr ASYM Precision ammo. He shot sub-MOA groups all the way to 500M. His groups were simply unbelievable at 100, 200, 300, 400, and 500M. As he runs an Aimpoint Micro T-1 on his other 5.56 carbines, he noted that inside of 200M the ACOG was slower, but really performed 200M-500M.
I wanted to run a Swarovski Z6i, but didn't have one to test again for the class. Because I used LaRue Tactical mounts, of course, I switched from Micro T-1 to Leupold CQBSS frequently. Often switching between optics during slow fire accuracy drills. Five round groups with one, switch, five round group with the other on a separate scoring area in order to compare the results. Basically the Aimpoint rocks 0-200M and is okay from 200-300M. The CQBSS was great 200M-500+M and worked okay 100M and in, but was definitely slower than an Aimpoint. I shot the Mod Navy Qual in the MRM class with the LaRue Tactical 14.5" 7.62 PredatOBR version that was built for the Texas Rangers.
The MNQ for the MRM is shot as follows: 5 rounds standing at a TRICON target 50M away, reload, five rounds kneeling at a TRICON target 100M away, reload, five rounds prone at a TRICON target 200M away. Par time is 45 seconds. Scoring system is the same as described previously. Because I wasn't able to "monopod" the magazine (20 rnd 7.62 mags are just too short) during prone, which I like to do as that is where I pick up speed and make time. In the carbine course I was able to shoot on my elbows because it is only 50 yards, but I just wasn't steady enough at 200 to shoot accurately at speed. So, I used a Harris BRMS Bi-Pod with LT706 mount for the prone. While it add a few more ounces, it didn't hinder my off hand shooting, but definitely didn't help at the kneeling, however it really helped in prone. I was able to shoot the MRM MNQ in 44 seconds.
Hope this explains things more clearly.
DPMMN - Thanks for your kind compliment. See what happens when they let us old retired Marines shoot the Navy quals?