Had a bit of time today to play...
First I put a few drop on a metal plinth, hit lightly with a hammer, nothing much happen. Hitting harder and hard, just can't ignite it.
The next test: put a few drop under a 40-ton fly-press. Again failed to make it ignite when struck.
Mixed 33/33/33 M/W/N but the couldn't dissolve all the nitro, see picture below:
I then put two drops of washing up liquid, shoke it a bit, went milky within a few seconds-appeared to have emulsified. Left it overnight, Shall have the answer tomorrow.
