Hello! Just wanted to point out that the turrets seem to be unable to hit Space Age asteroids regardless of whether the platform is stationary or moving. Not sure if this is a bug with just the new cannon magazines or with all projectiles.
EDIT: Hello again! looks like this is a bug with the cannon shell projectile and not specific to this mod, sorry for the alarm.

Yes indeed, I don't have a way to fix this for now.

I have the fix for this, you need to use the following under attack_parameters:
lead_target_for_projectile_speed = 1,
use_shooter_direction = true,

Great thanks, I'll take a look at this asap.

I've looked at implementing the change and it works but it doesn't not make cannon projectile hit asteroids still. I think there is something missing with a collision layer or something, still need more research.

Found the solution, it was indeed a collision layer missing to make projectile hit asteroids!