How do you “launder off” 155mm?
There isn’t a global black market for this. It only goes in certain weapons, of which the usual suspects have few of them.
Not that many people have to feed M777 or M109. And certainly not in such numbers. This isnt 7.62x39.
Worse for, say, HIMARS. You need US help with the GPS coordinates to unlock the hi res mode. And most likely also for targeting.
Think for one second, let’s say the 155mm shells cost $1000 per shell, Ukraine pays a company $2000 per shell, $1000 goes the manufacturer, $1000 goes into the pocket of someone and when you have no inspector general or anyone else auditing the situation, cheating is easy.
Same goes for any other weapons system, why do you think the powers in Washington steadfastly refuse to audit the over 100 million that has gone to Ukraine.
We left billions in Afghanistan, you think the MIC would have any problem stealing 40-50 billion from Ukraine or Ukraine steals it and funnels it back to pay off politicians in Washington.