What I don't get is the trend towards micro-blasters.
I know some guys, and have seen some strangers at various shooting ranges, who could actually shoot well (IE hit the target at a reasonable rate of fire) with Scandium magnums. However, I don't shoot high-power rounds from uber-light guns very well, and the majority of guys I see shooting those things shoot them even worse.
Mostly, I see those guys flinch their way through a few cylinders or magazines, congratulate themselves for hitting the paper somewhere, and then move on to a more comfortable shooting platform.
So my minimum carry weight is predicated on still being able to reliably hit the target, with a round of adequate power. I don't want anything heavier than .38+P in a J-frame; I don't want anything more than 9mm in a PM9 sized pistol. Why not? Because I don't do well with heavier loads in those small guns in practice; I don't like practicing with them; and that combination means I can never trust myself to shoot as well as I'd like to under pressure.
So, I don't go lighter than, or more powerful than, I am willing to practice with enough to ensure I can not only hit the target COM with my first round, but also with second and subsequent rounds.
To those who can do this with Scandium magnums or pocket .45's, more power to you, and I'm not being sarcastic. There are people who can do it, and that's great.
But I have not seen very many of them.