Is it time to move on from 5.56? Should we go back to heavier rounds like 308 or 6.5C? We test some brutal modern rounds and show the trajectory and continued rise of the most popular fighting round in the west.

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00:00 How We Got Here
02:19 Is 556 Dead?
03:10 M855
04:44 M855A1
06:50 M193
10:01 Mk262
11:27 Black Arc 80.5Gr
12:55 Headshot
15:28 Tactics & 556
19:27 Consensus