I feel the same way John, I don't like to use the "B" word in any sentence that I'm discussing a bow I just built.
I like to call it "Shooting it In" or shooting until the bow and the string settles in.
I probably put somewhere between 75-100 shots through mine or at least until the B50 flemish twist string settles in. I've found that I will need to add more twist at least once, sometimes twice to get the brace height to stay put from the string material stretching. Then it's pretty much good to go and it takes around 50 to 75 shots before it finally settles in.
I'm still fairly new at this myself, so these are just my own personal observations that I have noticed.