“Weight limits what the soldiers can carry”
Yes it does, but anyone who has observed how the “Christmas Tree” effect comes into play with Infantry understands that statement is kind of a red herring. 30-06 will reach out and touch someone, and turns cover into concealment. And it’s certainly not an “either or” prospect, I wish .gov organizations would get beyond that.
You are thinking of soldiers actually carefully aiming their shots. During battle few actually aim. It’s more about the volume of fire than aimed shots.