first i want to say to the persons missing that are most likely to be passed away from this really bad fire, that may they rest in peace. it appears...
Bought the tubes from Pyroboom. I have had no problems with canister shells. All tubes were fully inspected for proper loading. I know this shell was not in upside down.
It acted like the lift charge was not even there.
I had an issue like this a few years back with a 200 gram cake. The cake was glued correctly in place on a board. When I discharged this particular cake it basically blew at ground level. I did not hear any lift . That was the only repeater that I ever had