Do you have an ammocan?
If so, and you do this "test", please see my ammocan / RC LiPo pack build/testing thread about how I modified the can (it's really simple) and try the test in the ammocan, to see if a full-bore burning pack will be stopped by the can from exhausting flame out of teh can itself. (to see if it's able to contain the fire completely)
It'd not only be fun to see tried, it'd also serve a more-or-less scientific purpose. :wink: