Those are pretty terrible options to surpress, since once they are made subsonic to avoid the supersonic crack, they have little energy to actually inflict wounds due to how light the bullets are (still deadly, just very underpowered). He would've been better off with a 9mm or a 45, but both would've been a little harder to conceal.
On tracing a call: The call does not need to be actively going for the trace to work. As soon as it's made, the call can be traced, whether it's for 1 hours or 1 second.
All it takes is years of practice combined with the willingness to lose accuracy per shot, or only doing it at close distances. It isn't some superhuman feat that the average person can't learn.
It just isn't useful compared to a single handgun in any practical situation. It's a show trick only, you'd never compete with it, and you'd definitely not want to try it in any kind of real world setting. The time you spent learning to do it would be better spent practicing any other handgun drills.
I saw this "cool guide" a few weeks ago on the front of Lemmy and people were dissecting it in the comments back then, too.
I personally took interest in the silencer misrepresentation.
Overall it's a pretty stupid, simple comic gimmick by Bright Side. Bright Side are not proficient educators, they just excel at pumping out vast quantities of garbage "educational" content. /u/Blaze@sopuli.xyz should not have shared it.
Yeah an IKEA doorknob and any gun would likely work. You could also shoot out the internals and get it open or the wood next to it to weaken it for a kick.
MYTH: Spaceship doors can be opened by shooting the control panel with a blaster.
TRUTH: If the door is closed it can be opened by shooting the control panel with a blaster, HOWEVER....if the door is open it can also be closed by shooting the control panel with a blaster.