The rockets on the 190F8 are shape charged and deadly. There are a few ways to utilize them, but you shouldn't have to shoot more than 2 or 3 at a time. You just have to be good at repeating the exact same dive trajectory on each run, so you know the drop factor.
I generally salvo two rockets at a time, at just under 600 yards, and compensate my run slightly left or right, as both rockets you salvo will leave the same wing. A single hit kills just about anything.
I will add, that the T34 seems a little resistant. I don't have any hard numbers, but when practicing offline, I have a much harder time killing them in my standard ~40 degree dive plan. A tiger is particularly weak in the "normal " areas to these rockets. Panzers and Shermans.... I shoot one rocket at a time.
I generally attack T34's from a higher angle of incidence, probably ~70 degrees, and go for a back deck hit by the turret seam.
There are a few
great gunsights out there that deal solely with the drop of the F8's rockets as well. Since I value my GV time, I will not help you more than that.
My personal best was on a particularly hot and heavy GV-only attack on a field There were probably 20 or so GV's multiple reuppers, piling on a medium base. I landed 14 kills on two rearms...with only rockets. (36 rockets...firing two at a time, only missed a few times...and was invariably called a cheating hack

)
From a recent tour...
Fw 190F-8 75 2 0 18
My favorite GV killer...
