Hi there!
The ammo limit for each turret is the same as it would be if an inserter were filling it (10 for most turrets). This value is set in the prototype data, and unfortunately cannot be changed without restarting the game and editing the prototype info of every type of turret one by one.
This mod did previously have an option for this, but I was forced to sacrifice it in order to improve performance.
If you'd like, I could put in an option to change this during runtime without much trouble. The downside is that all turrets would have to be filled script-side. This would mean a UPS decrease as well as potentially causing turrets to be filled more slowly (meaning they might be empty longer before the script gets around to filling them).
If you'd still like the option despite this, let me know and I'll include it in the next update. If it doesn't work out, you can always change it back.
