Isn't uncocked (acc#2) and then roll (accum#3) the sequence in any swing?
The secret to Austin's length is his raw strength- period. The man had an athletes raw power- that you can't teach.
The swing is sound but don't aspect every student of his to be super bombers because of it. Better, yes - but not supermen.
A question of overlap, of mass, of time - of support through impact.
Rhythm
Extensor action
Full body impact support.
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Simplicity buffs, see 5-0, 1-L, 2-0 A and B 10-2-B, 4-D, 6B-1D, 6-B-3-0-1, 6-C-1, 6-E-2