Hsoi got himself a snubbie, and now is looking for BBs for it. He’s tried the usual LSWCHP 158 grain rounds, and gone through the internet recommendations. I am a big fan of Hornady’s Critical Defense ammo, which is a polymer filled hollowpoint round inspired by their LeverRevolution ammo.
The idea behind the Critical Defense ammo is that it will reliably expand at low velocity, or when fired through heavy clothing, because the tissue acts on the polymer tip and drives it into the body of the projectile, causing reliable and predictable expansion.
In fact, I’m such a big fan of it and the concept in general, that one of my HD guns is stocked with the .45 Colt LeverRev rounds, and I just ordered two boxes of the 9mm Critical Defense ammo from MidwayUSA to feed in my carry 9mm.