Best way to get through a wall.

Here a better way to win.
Well i think it is anyway.

Prevent your enemy from expanding.
Build 8 dt, 2 shuttle and 2 corsair (research web).
Use web on turret and bring your drop to comsat and destroy it. Enjoy starving your enemy.
If he survive expand lot and keep hurting his mineral and gas.
Psy storm or archon can be good way to kill scv.