Earlier quoted context omitted.
> It is true that the EU didn't and still doesn't have deep ammo reserves, though Indeed it is true. But it is also changing, the stockpiles are growing.
Is it true? Most analyses show EU stockpiles overall still falling, especially for precision weapons.
The balancing act is to increase stockpiles whilst supplying Ukraine which is consuming almost as fast as we're producing. Precision weapons you are right about, those are dwindling, but at the same time this is the one area where Ukraine internal production is beginning to outnumber imports (and their motivations are not so much quantity as 'no strings attached', which is very understandable).
Artillery shell production is up, 2.2 million shells/year or thereabouts, but here too the Ukraine war is consuming them very fast, either way, it is sixfold or so of what it was prior to 2022. Many new factories have been built and opened and are since a few months adding their output to the stream.
I think what held things back for a bit is that the EU was - wrongly - under the impression that Putin would back off but now that it is clear that that is not the case the longer term investments make sense. But it took a while for that to get underway.