IIRC, Repkon (Mesquite, TX) Line 1 was supposed to be producing 2,500 155mm artillery shell parts per month, by June 15th. Or at least, that was the story 1 year ago. After 3 years of war, western countries promising ammunition, continue to fumble production. It seems.
“several millions of rounds of ammunition”
The German-made rounds are about $600/each.
Ukraine makes much of the basic warfighting stuff itself.