We purchase our ammo in pallet qty, we could only get 30,000 rounds of 9 this month. Likely zero next month. I have dabbled with the 40s on and off for years. In the end they are hard to shoot in a sustained event. Say 500-700 rounds in a training session. We all switched back to 9s. I still like the round as well as 10mm I am just not man enough to shoot much of it! Hah! Like you I ended up giving a bunch of 40 away as I had nothing to feed it to. And still don’t.