Glad the seating depth got sorted out.
The scuff may just be the way that bullet hits the feed ramp or the way it turns to level in the chamber. I wouldn't be concerned unless it builds lead up somewhere.
Plated lead usually does use lead data. The issue is becoming confused because Hornady has been plating actual gilding metal jackets onto bullets rather than forming cups. But what are called plated bullets are usually covered in soft copper and are best treated as lead bullets. The other recommendation is not load them past the middle range of jacketed bullet data. It seems to me this information is in the FAQ at the Berry's bullet site.
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