US produced in October 28000 shellsUS analysts claim Russian artillery shell production has peaked and now the US will surpass it thanks to new production facilities being built in the US which will start operating next year. But the Russians aren't standing still either.
Russia produced in 2023 2 million shells that means 160000 shells per month.
So Russia currently produced 6 times more shells than the US.
I don’t know which data those analyst have, but I doubt that US can multiply by 6 their capacity.
EU is also increasing production but I am sure that North Korea can produce more than all EU at the same time so they will have few impact.