I think a few people were talking about turrets having some issues regarding to their tendency in shooting at other turrets in the same grid, but in case it doesn't:

Yesterday I am designing ships with guns using Weaponcore, and realized regardless on how I tweaked my turret placements the guns still shoot out other turrets, or actually ended up shooting the ship itself in order to hit a target near it.

At slightly tilted angles (5-10 degrees from the bow), there are severe friendly fire issues where the small guns, in order to hit the enemy vessel (even if shouldn't be able to hit), will attempt to shoot right through a 406mm triple gun right in front of it, damaging or destroying the gun in the process. 406mm guns that are directly at the back of other 406s will directly damage the turret in front consequently. 250mm guns will also attempt to shoot through things that will directly block their LOS and destroy them in the process.

At broadsides (~90 degrees) where everything is completely blocked by armor blocks, things act normally and no self damaging seems to occur.

Self shooting seems to be avoided if all guns are replaced by Northwind railgun turrets, as it seems that they have enough sense to not shoot the turret in front of it.
Self shooting *still* happens if either the main guns or secondary guns are Northwind, but not both.

My guess is the turret LOS in this mod is significantly higher than the actual guns, or the barrel exit of these guns are significantly lower than the supposed LOS.