I am afraid this will not be a quick recovery.
Even with a Trump win in November, the
backlog is huge.
I still see .357 Sig available on some websites.
(Underwood Ammo for example)
For you .40 S&W guys, a .357 Sig barrel swap
gets you right back into the game. Everything
else is the same. At this point, the cost of a barrel
sounds reasonable. It's an option, if nothing else.