Hi, Brasso:
Near as I understand it, the very wide meplat bullets like the conventional .38 wadcutter and the LBT Ogive Wadcutter (OWC) aren't as accurate at long range as the LFN bullets and the Keith type semi-wadcutters. IIRC, Ross Seyfried says the OWCs have a tendency to tumble once they hit meat and if they do, don't penetrate like a LFN type.
Bye
Jack