Being one of the 'bully' KV-1 drivers I could offer you some tips on how to kill me. Then again I might not!

OK. The KV-1 is not Superman. It has it's weak spots. The bottom plate at the front of the tank is one. If you shoot him there you will damage him. Ignore the turret. I don't even bothering to shoot the turret in my Tiger 1. Again at the front of the tank there are a couple of other weak spots. The drivers slit. The coaxial machine gun port. Keep shooting there and you will, especially if you use HE, damage and even kill the driver and radio operator. At the side of the tank, just below and behind the turret is where the bully keeps his ammo. OK you might not rack him but if you pen then you can slow down his rate of fire. Then of course you can always track him.

I feel your pain though. In my Chaffee, a tier 5, I regularly get put in tier 10 games, (I'm a scout) and the only way I can make any damage to the enemy is by using HE rounds and that's with the Firefly gun on it. So expect more of the same grinding your way up the tree.

Then when you get to the IS-3 it all, somehow, seems worth it.