30-06 Rifleman
Inactive
Unless you're willing to go out and purchase hundreds of rounds of defensive ammo, get dozens of gel blocks and calibrate them, and shoot all of them from the pistol you choose to carry, and do your damndest to control all other factors, you're not going to have definitive proof. There will always be a test that shows an exception and provides conflicting results. This is the nature of statustics. You use the data available and make a decision based on the average. This whole thread seems to be you looking for the one test that will decide this for you by providing irrefutable proof. There is no such test, that's why this debate goes on.
I repeat what I said, if one load from one manufacturer in one bullet weight in one test not performing as desired is enough to give you significant pause about a caliber as a whole, you should not change calibers. That wasn't me being facetious. That's me saying you're not in the mindset to make that change. Sure as hell don't replace what you know to be a system that works for you. At most get another gun at some point if you want to, even if it takes the time to save the money to do that. You're not going to be at some significant disadvantage with a Glock 21, certainly not compared to what some are willing to carry. Your skill with the weapon will be far more relevant.
Understood. If I may ask, what load do you prefer in 9mm?