Well based on API
RecipePrototype has a property called 'overload_multiplier'

https://lua-api.factorio.com/latest/prototypes/RecipePrototype.html#overload_multiplier

So, you can create a custom mod that will change this value from default 0 to whatever you consider is enough for you


I'll see ...

you can use the vanilla loader (obtainable with the console or mods) to fill buildings up to the stack size

Not seeing this as a working option.

The game has a value named Automation Insertion Limit. You can see it on the tool tips for any machine or turret.

I want to change this value. How do ...

For example: more than 10 ammo loaded into a turret. Or, more than 2 science packs loaded into a lab.

My question is: is the amount loaded determined by the lab/turret, or the inserter?

Can this be accomplished in vanilla with circuits or something else I am missing? Or would I need to find (it ...