Settings -> Mod Settings -> Per player.
There's 3 settings which affect the amount placed:
- Ammo load, limit by
- - This choose whether to try a percentage of what is in your inventory or a count of ammo. If "both" is selected, the amount of ammo loaded will be the lower of the two.
- Ammo load, percentage
- - Sets a percent of the amount of ammo in your inventory to try and load into the turret (requires "limit by" to be either "Both" or "Percentage")
- Ammo load, count
- - Sets the number of items to try and load from your inventory (requires "limit by" to be either "Both" or "Count").
If you're looking to full-load a stack of ammo every time, you can set percentage = 100, and count = 200.