I'm wondering if anyone else has run into this issue. I'm on the PC using the 360 controller and my ammo change button (up on the D pad) has stopped working on all my weapons. I've also tried doing it in the inventory and that's not working either. So then I unplugged the controller and tried using keyboard and mouse controls, and they're not working either. So has anyone else had this, and if so, did you get it working again and how?

Edit: I've just rebooted the game and now I can change the ammo on all guns except my sniper rifle, which is stuck on AP. I've even tried dropping all my sniper rifle ammo and picking it back up, unfortunately it automatically reassigns the AP. When I only have regular .308 in my inventory it won't let me load the sniper rifle with any ammo at all.