Having experienced al three of the shotgun issues I see here: The first two are just loaded very light, and unless you hit the top of the target, it won't fall down The third one had no powder OR shot. You just fired the plastic wad downrange. On the 4th & 5th it looks like the flash hole in the shell is blocked and the primer is backfiring everything. I have not done this with a shotgun but I HAVE done it with inline muzzleloaders, it looks the same as here.
I loaded up a buncha 12 gauge with what the data said was a good light load. It's TOO light. I've gone up a bit. Those snakes were set very hard. Losta shooters had trouble with them. On one stage, they were pistol targets. Factory (cowboy) loads in .44 Magnum had trouble!
