LAH, there is no real answer to your questions. Lyman specs and quality have varied wildly over the years. To add to the confusion, at various times, Lyman has used both Lyman #2 and Linotype to establish bullet weights. Lyman has also been known to change bullet designs without bothering to change model numbers.
I recently debated with a poster as to whether Lyman 311410 is plain base or bevel base. Turns out mine is PB; his is BB; both our moulds are marked 311410.