You're good thank you for the info, in this and my other comment my point is that unless one is a gun enthusiast there is little chance we are going to know these things. I have a family member and a friend that would know all this but they spend a lot of time a money with their hobby, me by comparison, am am absolute casual.
Also, when I did my first competitive shooting circuit my gun jammed, I struggled with clearing the obstruction and carrying on, lost a ton of time. This guy reracked the shots pretty calmly and cleanly, certainly was familiar with this gun and ammo combo.
Ah, so that's why he had to rack the slide in-between shots. Yeah, that's stuff only an absolute gun nerd is going to take into account without having practiced.
Same!