Paul Harrell is one of my go to guys when I don't have the inclination to do the testing on my own. I have done a lot of testing on the guns and ammo that I use in my guns but most of my testing was done with my own reloads which may not compare with factory ammo. He (Paul) has a lot of videos comparing calibers and guns in live fire uses. His abilities may be better or worse than your own and he stay away from final decisions that are broad ranging. He lets you decide for yourself.