Yes, but not the hub cannon switched off, and the gondolas used.
Oddly enough, I find I hit FAR more times with the 30mm when it has 20mm in the same bank... I wonder if it's modeled differently somehow. In the 190a8 with 30mm and in the G6/G10 30mm with 20mm gondies, I get FAR more single ping catastrophic hits than I do with just a single 30mm.