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Posted: 3/16/2010 11:48:50 PM EDT
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It was a beautiful day so I spent it at the range. Temperature was 40 with no wind and the sun was out. I took my chrono out because I wanted to see how my 77 grain 5.56 load would do in my guns for velocity. I am going to the Larue match in Texas this year and I am working on a good long distance load. Here are the chrono results
3-16-10 Chrono results 77 grain Loads with Tac max charge. Noveske. 14.5 inch barrel 1.2479 2.2514 3.2499 4.2521 5.2526 6.2516 7.2482 Average Velocity 2505 Extreme spread 47 fps USPSA power factor 192 55 grain FMJ Reloads with H335 powder (plinking load) 1.2826 2.2880 3.2822 4.2833 5.2811 Average velocity 2834 Extreme spread 69 fps USPSA power factor 156 Factory 75 grain Tap. 1.2563 2.2597 3.2596 Average Velocity 2585 Extreme spread 33 fps USPSA power factor 193 Daniel Defense 16 inch barrel 77 grain load 1.2514 2.2499 3.2523 4.2452 5.2477 6.2540 7.2542 Average velocity 2506 fps. Extreme Spread 90 fps USPSA power factor 192 55 grain load 1.2833 2.2807 3.2930 4.2784 5.2809 Average velocity 2832 Extreme spread 149 USPSA power factor 155 Colt 16 inch 6920 77 grain load 1.2431 2.2370 3.2373 4.2430 5.2521 6.2507 7.2479 8.2487 Average velocity 2449 Extreme spread 151 fps. USPSA power factor 188 55 grain load 1.2775 2.2818 3.2866 4.2853 5.2840 Average Velocity 2830 Extreme spread 91 fps USPSA power factor 155 Larue 20 inch Stealth 1.2636 2.2608 3.2652 4.2734 5.2730 6.2667 Average Velocity 2671 Extreme spread 126 USPSA power factor 205 55 grain load 1.2914 2.2932 3.2884 4.2992 Average velocity 2930 Extreme spread 108 USPSA power factor 161 STI Edge in 40 sw. Vita Vory N 320 powder. 180 grain Winchester JHP bullets. 1.926 2.923 3.966 4.932 5.956 Average Velocity 940 Extreme Spread 43 fps USPSA power factor 169 Wilson Combat CQB 200 grain LSW. Bulls eye powder (IDPA load) 1.846 2.866 3.850 4.841 5.832 Average Velocity 847 Extreme Spread 34 fps USPSA power factor 169 Conclusion Noveske N4 2505 DD M4 2506 Colt 2449 Larue 2671 So after playing musical optics with my rifles the last few months I am back to were I started from on my Noveske. I put the Swarovski back on it. I am going to take this rifle to the Larue match and use it for patrol. I like the ACOG with the Aimpoint off set that I had before. But I think having a 1-6 power variable scope gives me a bit more versatility on patrol. I don’t see myself shooting past 200 yards but I have been in situations where it would have been nice to see the target better. A 6x optic does that better than a 3x one. 
I was worried that my Noveske may not have enough velocity to knock the 500 yard targets over at the Larue match but I found it is pushing bullets just as fast as my 16 inch DDM4 and faster than my Colt. I put the TA 33 and Aimpoint on the Colt and the Tr24 on the DDM4. 
I also did some work on shooting from awkward positions. Basically shooting from urban prone where the rifle is at 90 degrees in order to shoot under low cover like under a vehicle. Basically I found if you want to hit the target you need to aim at the opposite shoulder from where your scope is facing. So if your ejection port is down you aim at 2 o clock ie the targets left shoulder and if your are shooting ejection port up you aim at the 10 o clock or right shoulder. Below is a target showing what I mean. The sticky notes were my aim points. 
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Hot damn....what do i say after such a detailed, informative and overall great post....THANKS for taking the effort and great info and beautiful guns
eta.....PICK YOUR FAVORITE, and yes you must or i will seize them all for my collection and then i will PICK MY FAV 
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The max load I got was from sierra's book. Do you have a link to the new data?
My favorite is the Noveske it has the best trigger and is the most accurate of my carbines. (solid 1 moa gun for 5 shot groups) The colt and the DD are 1.5 moa guns on average) My Larue which was not pictured (waiting on new Nightforce 2.5-10) is more accurate (.5 moa gun) but very heavy. Pat |
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