Well, there's only one fun way to test whether an FN Browning Hi Power magazine will fit and function in an FN BDA-9 (aka HP-DA or DA-HP, as in double action Hi Power) and vice-versa, and that's to test it out on the range! Will we confirm or refute what the Intartubes says about it?
With a somewhat surprising result!!!
Fabrique Nationale Herstal High Power 9mm Luger 9x19 9mm Para GP35 GP 35 GP-35
Firearms history, blokesplaining firearms mechanics, mythbusting, shooting sports and kitschy sketches all in one place. An often dry and sarcastic look at whatever takes the Bloke's and the Chap's fancy in the world of guns and shooting.