Ever notice you can knock out a tigers turret if you hit em on top of his turret?
Elevation is the key...i.e. you above the tiger slightly, but it works.
Experiences against Tigers in the Beta frame of the current scenario has got a lot of experienced tankers really scratching their heads. Most of them know the piss poor, hit'n miss (pun intended) GV model we have that really has a low consistancy rating. However, in the Beta the Tiger seemed to be phenomenal in all aspects, especialy in taking damage at close range and rolling away, far in excess of what most seem to experience in the MA.
For myself, I fired at just under 2K, from an elevated base, down on the top of the turret of a Tiger, with three direct hits (with sprites and no visible richocet) to no effect whatsoever, he rolled away. However, in the MA, I have hit a Tiger coming down off a small hill, showing just a bit of his turret top, and pinged him there at 2.5K or a little more. Kaboom! Go figure.