Does no-one use a log-splitting axe? Like an axey axe but with a much thicker blade to force the wood apart?
Wedges when the log-splitting axe can't get in there, yes, but mostly the log-splitting axe should do the job?
BH is an education to watch - with a thick log, first a few blows around a ring (concentric), then the radials to split off the first row of chunks, then another concentric, and so on.