All right boyz, maybe you can help me with a problem I am having. I cannot seem to close out matches, how embarrassing. Handling fights out in the open and at shield generators is pretty easy, but I struggle with knowing when to attack the turrets. When I do go for turrets, I lose my boyz pretty fast, so I think I am bringing the wrong type of dakka. Timing is also an issue, as humies or point-heads that are on their ++heresy redacted++ know to build more boyz at home during the fight, and the turret seems unassailable. My armies are weakened from the killin' and can't stand up for long to even a few shootas and the turret.
So, what typically is needed to take down turrets, and when should I go for them?