@dy031101
Got an answer on what was wrong with the BT-42 ammo, apperantly the finnish shells had problems with fuses so that the jet frequently fired as the shell started to bounce
That's a shame although the BT-42 itself has other troubles.
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this, if you haven't seen it already.
Okay, I don't think that belt-fed mechanism for their own high-velocity 75mm gun is gonna work out, either. But did you use Pz.III or Pz.IV turret on your Type 1 Kai? The reason why I first assumed the main gun to be 50mm is that I thought the Pz.III turret is probably more workable.