Originally Posted by JonM
Lead works just fine in 9mm some experimentation is needed to find the proper hardness if your casting your own to reduce leading but off the shelf lead ammo works just fine as they did the experimenting decades ago.
I agree. I reload for plinking. My current bullets are lead, off the shelf. They have given no problems for plinking in my M&P9.
For self defense, definitely find something in jacketed hollow point. In all honesty, just about any 9mm JHP ammo you can find at a store will be sufficient for you until you can test some different manufacturers for yourself and decide on your favorite. Your Beretta will more than likely feed them all reliably. That being said, when you buy some self defense ammo, definitely run a few shots thru the gun, just to make sure.
Did you buy your Beretta new or used? If new, run a couple hundred FMJ rounds thru it at a range to break it in before you trust it 100%, if you can.
Sorry about any typos. I'm on my phone right now.