What is the best Ammo for your BG 380 is kind of like asking what is the best Pickup manufacturer.
For me I use Hornady Critical Defense rounds in my 380. Why? Personal preference I guess. They work and feed well in mine, I have good grouping and hitting point of aim.
For practice I use my reloads, granted I do not run as many rounds through my 380 as I do with my .357's, 40's, or my 45's but I do try to run 50 or so every couple of months to stay comfortable using and firing it as it is my carry gun for the most part.
Sorry I could not tell you that one "Magic Bullet" that will have the recoil of a 22, the stopping power of a 44 magnum. or the muzzle flash of a Pellet Gun, but frankly it does not exist.