6mm ARC vs 5.56mm- Side by Side Comparison

6ARC is getting a ton of attention right now as the ideal DMR caliber but I'd like to see exactly how it performs vs 5.56mm in real world conditions. Lets shoot my 14.5" 6ARC upper and 14.5" 5.56mm uppers out to distance and gather hard data on the differences in bullet drop, windage, energy on target, recoil, ability to spot impacts and anything else I notice as a shooter. If you're into shooting medium to long range with a small frame AR, stick around as I know you're going to enjoy this video!

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5.56 upper details
Factory colt 6920 upper rebarreled with a 14.5" 1/7" twist colt socom barrel
DD RIS II FSP rail
Surefire FA556-212 monster suppressor
Ammo- IMI Razorcore 77gr smk 5.56

6mm ARC upper details
14.5" 1/8" twist faxon barrel- carbine length gas system
SLR clamp on adjustable gas block
faxon BCG
BCM upper receiver
Geissele charging handle
DD RIS III rail
Surefire socom 762 mini suppressor
Ammo- Hornady Black 105 BTHP

Optics on both uppers
Nightforce ATACR F1 4-16 tremor 3 reticle
Spuhr mount

00:00 Intro
02:20 Gear Review
07:47 6ARC 537 yds
09:11 5.56 537 yds
10:42 6ARC 710 yds
11:55 5.56 710 yds
13:49 6ARC 850 yds
16:25 5.56 850 yds
19:18 Ranging and drop for next target
20:41 5.56 1022 yds
24:04 6ARC 1022 yds
27:09 Shooting review
30:45 My thoughts
33:31 Closing comments