Been wondering what everyone's opinion is on a good quality, but affordable self defense ammo. Specifically something that's readily available at Wal-mart. Affordable is important because I'd like to be able to buy a few boxes to make sure they feed through my XD9 without any problems. Right now I'm carrying ball ammo and I just moved into an older apartment and its got me realizing that ball ammo and thin walls probably wouldn't mix well if I ever had to use my gun