That's the same question I had. The hollw points and flat points are shorter than the regular 230gr RN. You need oal specs for HP bullets. For the FP that I load, I measured the length of the FP to the round nose. I subtracted that difference from the oal to get my starting point. Still had to load a little shorter to get propper fit though.
597 VTR, because there's so many cans and so little time!