Comments by "TotalRookie_LV" (@TotalRookie_LV) on "Q&A 18: Ammunition Adventures (and more)" video.
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IMO, the choice of standard round may also partly be dependent on the geography of the country. Where I live, we hardly need a full power rifle round, land is pretty much flat and heavily forested. However, when they got to Afghanistan... Carbine in 55,6 is nice - precise and light, but then suddenly carrying some of the old G3 (which by that time army didn't had anymore as far as I'm aware, those rifles got passed to national guard) suddenly made sense again - large plains and mountains, that pushes view distance incredibly far. US likewise reintroduced good old M14, didn't they?
Now think of Argentina and Turkey - a lot plains and mountains, sure, towns and forests too, but not to the degree most of Europe has them.
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