The drawings, if drawn correctly, just about explains it all. The Canadian APDS was screwed and glued to the case and M8’s was probably punched stabbed as well. Examination of M8’s projectile reveals there are radial weakening slots machined around the base (from the drawing it would appear these are cut just above the thread). Furthermore, it can be seen that the lands between the slots have been grooved, presumably to weaken them. Thus, on firing, the lands will fracture and the base will remain attached to the case.
TimG
TimG
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