About gun turrets

[Echmech]

I personally think that it really doesn't matter because if your defenses aren't working you can just go kill the spawner. So just deal with the bitters early on or wait for them to become a problem either way the true correct answer is to just kill them and don't relie on turrets to keep you safe because they are a temporary solution.

I believe you missed how evolution works. Whenever you kill spawners it "raises" evolution meaning harder enemies to beat in the future. (Until you reached max evolution, then you can kill all the spawners you feel like)

[Laturine]

Have you tried storing ammo in chests, then pulling out of the chests with inserters to get the stack bonus? This seems like this will allow for the turrets to be fed fast enough. There's prolly some specific number you can cap the chest at too to manage resources a lil more effeciently.