To chime back in, my contention is that we should be churning out at least enough to keep Ukraine fully supplied without the need to ration, and the fact that we still aren't there 3+ years into this war is not a good sign.
Speaking more broadly, I think that the proper amount of war-related industry should depend not just on whether the war is ongoing or not, but on how likely it is. Right now I believe that a major war that US will likely need to participate in sooner or later is more likely than not by 2050.
I don't think our "not being there" has anything to do with ability but with political appetite. If both political parties wanted to produce a lot of shells, we'd produce a lot of shells. Right now one political party wants Ukraine to lose, so we don't.
Speaking more broadly, I think that the proper amount of war-related industry should depend not just on whether the war is ongoing or not, but on how likely it is. Right now I believe that a major war that US will likely need to participate in sooner or later is more likely than not by 2050.