[Pibwl]

We have several months to find out, I think. As I've said, I have never found any info on works on improved 37 mm AP rounds, while I'm interested in Polish armour for at least 25 years (and for 15 years I run a webpage about it), and I'm trying to track the news. Surely such ammo wasn't issued. Besides, there was no need for improved AP rounds, since standard round was enough to deal with all contemporary German and Soviet tanks (its performance was slightly better, then Pak-35/36). Penetration 8 is the same, as German tungsten APCR. Future Polish tanks were to be armed with 40-55 mm guns instead.

Michal