I'm confused because first you said stovepipe, but then you said failure to feed...those are two completely different things.
It would have given us a better idea and maybe better suggestions if you had shown the malfunction as it occurred before you cleared it...it looked like you did something when the gun was below the view of the camera. From the footage shown, it looked like an incomplete feeding of the cartridge into the chamber which would usually originate from the magazine or an overly tight extractor. I would also recommend trying a couple of different magazines and also track where in the cartridge column the mis-feed occurrs.
The shooting errors shown, I would attribute to technique...at least based on watching you trigger the rounds. It looked like you were slapping the trigger quite a bit, which would account for the spread and the low shots. I would also suspect, since we could only see your grip from the left side, that the grips are too large for a consistent grip and the trigger reach is too short. It looked like you had too much finger on the trigger and had to overcompress the finger joint to press the trigger back to the let off point.
With your technique, it would be hard to determine if the front sight is off, if you aren't shooting from a solid rest
BTW: You posted this clip twice, I deleted the other thread as this one had responses posted. Please be more careful in the future.