To threadjack a bit, what's the TRUE difference between AP and APCR? I'm aware of the real world differences, that is, AP is just a solid round with a hardened penetrator cap and APCR has a rigid "dart" at it's core. But how is it modeled in game? Is it simply taht the APCR has an easier time penetrating?
Or is there something more subtle like the APCR penetrates easier but causes less overall damage, making it more of a "precision" round, whereas AP does more overall damage but doesn't penetrate as easily?