How high is demand? According to the NASGW’s SCOPE DLX report summary for 2020, the ammunition business was up 81% in 2020 compared to 2019. If you compare it to the three-year average, it’s up 148.91%.
You might want to consider trading ammo. Check your stock for ammo you no longer need and offer it to friends or gun club members in exchange for something you'd like to have.
I know if I checked, I'd have some stuff someone else would love to have.