This is only part of the reason why ammo is so hard to find right now. Most states (I know only of Illinois as being the exception) have conceal and carry. Most of the new applicants are women. Naturally, they need training, so practice shooting is way up. I have a hard time getting into my usual range because it is so crowded these day. So demand for ammo is up. Not to mention that whenever you have a shortage of just about anything, people will hoard.
Add these up and we have a very tight market for ammo.