Just to add to the discussion, I've also been doing some informal experimentation with various defense ammo. This past weekend I had a chance to do some shooting and compared some of the aforementioned brands. I've been carrying the popular Speer Gold Dot 135 +p, but wanted to do some comparisons with the Georgia Arms Speer "Unicore" 125 gr. +p as well as the controversial Buffalo Bore +p "FBI" load. As some have mentioned the BB was a handful, but performed well. I will say that Speer rounds performed a little better on follow up shots, particularly the GA Arms 125 gr.+p. Some have said they believe that GA Arms +p is a little weak compared to some of the name brand +p, and that might be the case as I don't believe that the 10 grain difference between the two would have much noticeable difference in perceived recoil. I was just shooting at an indoor range and was not chrono-ing or using ballistics gel, so no word on muzzle energy or expansion, just general observation. I'd love to see some formal comparisons, but don't have the means to conduct it. The only ballistics test video on YouTube is the GA Arms Speer Unicore 9mm +p, which expanded well in a "milk jug" test.