It's
pretty safe to make assumptions off the first three numbers, but it's believed that the full effect of a kava is determined by the relation and percentage of
all the kavalactones within it. The heavier body effects you notice in this one are probably from the 'double-bonded' lactone DHK (2) being in the
first three, coupled with the
high overall kavalactone content of Papa Kea. The others you mentioned with 463 have no prevalent double bonds and that gives the lighter, cleaner headier effect. I've had Mo'i in the past and it was definitely one of the lightest, easiest kavas.
If you check out the chemotype for a popular body-melter, mind-sedater; Boroguru
245613...you can see
two double-bonded lactones within the first three. DHK(2) & DHM(5). So you can look at that and know immediately that you've got a nice heavy one.
You might notice something considered 'heady' like Fu'u happens to have a double-bonded in it's 1st three (46
5) or that Borogu(
246) has a similar 1st three to Papa Kea, except with the double-bonded DHK(2) in the 1st position. You might expect that to mean that it should then be a bit heavier than the Papa Kea, but I think that is where the overall kavalactone percentages of the batch come into play. Because I doubt Borogu or any other widely available kava are packing that 20%+ punch of kavalactones that Chris' Papakea does. (except perhaps koniak, isa) Every kava would be more awesome if they were always 15-20%+
here are the major kavalactones for any future lurkers:
1 = demethoxy-yangonin
2 = dihydrokavain
3 = yangonin
4 = kavain
5 = dihydromethysticin
6 = methysticin