This tank gets exclusive access to the most broken autoreloading mechanic in the game, but is balanced from by being mounted on a heavily gimped IS-3. Still a very good tank with a high skill ceiling though.

Pros:
-Inverse autoreloading: you literally get a 3 shot autoloader that can keep firing as a single shot after fully unloading. Gives unparalleled flexibility, you can initiate fights with a free 1170 damage to basically guarantee you win any trade
-IS-3 platform is overall quite flexible and well armoured: strong, front-mounted turret makes peeking quite easy, hull armour is unreliable but still trolls from time to time
-Decent top speed (40) with good enough ground resistances to reach it
-Access to good shell types: high-velocity APCR makes long-range less painful and high-pen HEAT lets you pen many turret roofs

Cons:
-You never actually reach the top speed because of the terrible power-to-weight
-Gun handling/aim time is awful. I run rotation+vstab and I still find myself wanting to slam my head through a wall sometimes
-Bad single-shot DPM, made worse by the fact that you can't run a rammer
-5 degrees of gun depression

Overall, probably one of the best tanks for trading with in the tier, eclipsing even the Skoda T56 in many cases thanks to its unparalleled flexibility