It's still not close to Ed McGivern's 5-shot time, or Jerry Miculek's attempt to beat it. I wonder if Mr. Miculek has tried a 19 shot time? McGivern's .45 seconds for 5 shots translates to .09 seconds per shot. At that rate the 19 shot time would have to be 1.71 seconds.
I think this may be an example of "bump shooting", which is not an example of the kind of coordination and practice displayed by the likes of McGivern and Miculek.