It should be obvious that choosing ammo carefully is important. But I hold the opinion that what we carry and shoot in a crisis has a lesser importance than how well we shoot it. In the final analysis, we are all pre-occupied with the wrong ammunition. We should be far more concerned about the ammo we did not fire in practice sessions that precede the day we have to shoot for real.
I am in full agreement. I have had no inclination to change my opinion since I first put up a web page on the topic in 1998.