I know JHP's are what is normally tested in ballistic gel but I was wondering if anyone has ever seen a 10mm TMJ tested. Or if not, any caliber ball ammo in gel. If TMJ and FMJ are meant for penetration on large game like grizzly, then surely they also get tested at some point to measure their effectiveness. Or do they just send some guy out in the woods with a bunch of ball ammo and see if he comes back? Wanna kill these ads? We can help!