I know this has been a constant debate for decades, probably since the M14 was replaced by the M16, but it continues. Having been to multiple areas including Afghan and Iraq, I can see advantages to both rounds. Personally, I'd like to be able to reach further which is the goal of combat. Engage your enemies beyond their effective range. Which was the problem for most of our guys when I was there. We had mainly 556 rifle engaging at 700+ yards. While my 308 worked great there, I was one of very few who had one.

https://bearingarms.com/bob-o/2017/0...fles-back-war/