I've been experimenting with setting the turn_range under attack_parameters on ammo-turrets.
It works perfectly if turn_range is set at .25 or lower. The turret will only engage and fire at target enemies that fall within the green.
However, if the turn_range is larger than .25, the turret can rotate itself if the target would fall within the green area from various orientations.
Here is a quick test with a gun turret with turn_range set to .5. There is a potential target circled in red.
![Image](https://forums.factorio.com/images/ext/2f3f884c53105c444887161003287041.jpg)
I plop the turret facing north. As soon as it engages the target, it rotates itself to the west, and remains at that orientation after the target is destroyed.
![Image](https://forums.factorio.com/images/ext/9f27e62085fb4e5d8219c392dec0e9db.jpg)
Perhaps there is another setting I'm over looking? It would be great if I could get turn_range to work the same way on ammo-turrets as it does on fluid-turrets.
Thanks!