lutalica

Hello all. I was wondering if anyone had any info or resources where I might find something regarding a APFSDS round for the Bofors 57mm L/70 Naval cannon that was apparently developed in the 1970s for the 57x438R calibre . I came across some old defense readings from the 1970s that mentioned a apfsds round was designed and tested by Bofors for the 57mm L/70 Mark 1 Naval cannon. With my limited understanding I don't know where to begin looking into this round/subject, my resources at hand have netted me nothing so far . I checked a number of Naval publications and tried to reach out too BAE Systems which bought Bofors from my understanding but have yet to receive a reply. Thanks in advance. Lutalica