Instead of shooting it, let's do something much more common and realistic:
Build a pack of those cells up from random lots of cells with different characteristics so they are not matched and will not charge or discharge at the same rate.
Install a common cheap crappy BMS to the cells, then discharge the pack to empty. Make sure a BMS is used that has no balancing function and that is either broken (shorted charge FETs) or just doesn't correctly restrict charging once cell voltages drop below the normal limiting ranges.
Then let it sit for a few months hooked up to a common cheap ebike controller/display setup, so the BMS and/or display will drain the pack further (to the point where typical cells would be far overdischarged).
Then recharge the pack with a cheap charger capable of as high a current as possible even when the pack is too low to do that.
Cycle it this way repeatedly, and see if anything catastrophic happens.
Test a bunch of packs this way, and while doing that, also test a bunch more that have been soaked in water and dried repeatedly, while in operation, and test a bunch more that have been dropped and crashed, etc. so that some of the cells are no longer connected to the pack, and some of them have damaged casings, etc.
Because...those are the kinds of things that almost certainly cause the fires.
Not many people are riding in hunting areas or combat zones.