16 Jun 2022 8:47 am
I can read, the US military wanted a weapon with a smaller lighter weight round so soldiers could carry more ammo and go longer without resupply.
The difference between the 5.56x45MM Nato and the 7.62x51MM Nato is approximately 660 rounds of 5.56 vs only 280 rounds of 7.62 on a 22 LB ammo load.