Use of reloads by US military

[browningautorifle]

The only time I heard of reloading practices for military ammo is for the Krag rifle. Instructions were packed with the ammo to get you started. Canada produced M193 in 1971 I think for use in the continental US. From what I have heard it was actually cleaner than what they were using at the time because of different powders. I don't believe the military would use reloads. I know Canada wouldn't, why then would a power like the US? To compare with Brazil? Please.