After a long time research on after extraordinary I am pushed on this cannon.
88mm L/130 AT gun (not a Flak gun, a PaK) proposal from January 1943 – this plan was found by a Russian named Yuri Pasholok.
Rohrgewicht = Pipe weight (translated)
Just the barrel of the gun weighs 5300 kilograms, almost as much as a T-60 tank (5.8 tons). To compare, an entire Pak 37 weighs 327 kg in combat. If this thing was built, it would not work like a traditional AT gun.
Even if the gun for the Tiger and Tiger 2 were planned you would be in the game on Tier 7-8 very op, however not at Tier 10 and fact is the plans were genuine.
What do you think about it?