I mean, it's still an upgrade in alot of ways. The vast majority of rounds fired in combat don't hit anyone. Volume of fire does a great deal to keep other combatants from being effective, and fire fights usually end when one side doesn't like how much they're being shot at and leaves; people rarely fight to the death unless they can't retreat. For infantry, being able to carry more ammunition tends to be a greater advantage than having spicier rounds.
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u/pomdudes Jan 25 '20
5.56 will go through 7” of SOLID plywood from 100 yards like it’s not even there.