No, but I did know of a guy who used electromagnets of reversed
polarity in lieu of an ejection charge.
He coiled wires around two horshoe-shaped magnets, one affixed to
the upper airframe, one attached to a recess in the nosecone shoulder.
In the payload bay he had a nine-volt battery to power it up. The whole
thing ran through a two event timer.
It was timed to actuate just after apogee, which worked pretty
well. That way, the magnets simply had to "help gravity". The really
great thing was, the whole setup culd have fit into a Quest SuperBird,
but if I remember right, he had it in an old Estes Honest John with an
Aerotech F, I think.