Hello. Corbon's PowRball is an aggressive expander that still manages to get around 12" penetration in 10% ballistic gelatin. It does this because it takes 4 or 5" penetration for the bullet jacket to separate enough from around the polymer ball that forms the nose to allow the hydraulic forces to begin expanding the thinly jacketed bullet. I have not shot any living creature with PowRball. In wet pack and water, it has consistently expanded in 9mm and .45 ACP, which are the only calibers I've tried it in. One fellow I trust reported seeing it used on deer from a .45, but penetration was lacking and below the 12" in ballistic gelatin.
My limited experiences with the PowRball are just that, but I think it is probably a good defense load for folks concerned with overpenetration issues.
They have alot of good information when it comes to testing ammo. As far as opinions and comments Evan and his group are a bunch of primadonas that I can do without. They are also very bias towards CorBon.
Now I said my peace. I have tried PowRBall 9mm and it fast very fast like all CorBon ammo.My tests have been limited but from what I can tell it should work. Another ammo you might want to look at is Federal EFMJ. In my testing with a Kahr E9 & K9 & MK9 this and the Federal HST loads group rather well. As far as CorBons loads the +P115 9mm seem to work better out of my guns. I read in Handguns Mag a few months back Dave Spalding wrote that he thought the EFMJ round was excellant and would carry if he could. That is as close to what I remember so excuse me if I wrote it wrong.
Most of the Personal Defense ammo is good just have to see what works better in your gun and works 100% of time.
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