The US does not have the capacity to make vast amounts of ammunition that the US military does not use. It isn’t a Soviet-style military that relies on shear vo

The US does not have the capacity to make vast amounts of ammunition that the US military does not use. It isn’t a Soviet-style military that relies on shear volume of dumb ordnance to win battles. The US does have vast stocks and reserves of the equipment it does use. For ammunition it does use, the US has large overages that they can give to other countries when the need arises that greatly exceed what they have a use for. A lot of the equipment that the US sent Ukraine was rescued from the scrapyard and would not be used by the US in any case. The US military heavily relies on quick, precision fires in a way few militaries do as a matter of doctrine. Quantity matters much less than quality in these cases. Though the US has absolute numerical superiority for a lot of land war systems (e.g. the US has ~8000 Abrams tanks), half of which are in storage because they don’t have a use for that many. Ammunition for these systems is similarly in cold storage.