I’m a little confused by your response. Everything in my post was written from the perspective of firing the type of blank I described (no bullet, balsa wood or real) with the BFA attached. While I have had that type of blank cycle the weapon without a BFA attached, it’s the exception to the rule.
Furthermore, would you clarify the use of these balsa wood bullets for me? Because, given my understanding of BFAs and what you described, I don’t see how those two concepts would work together. As you said, the principle behind BFAs is plugging the barrel so more gas is directed to the action, rather than our of the system. If you had a BFA fitted to a weapon that was firing blanks which were tipped with wood or some other fake projectile, my assumption would be the debris would collect in the end of the barrel behind the BFA post. Hell, that’s why we always hated training with blanks, it was always a nightmare to clean out the carbon buildup in the weapon after since none of it was expelled in the firing process like it would be in normal operation. Compacting a shit load of debris in the barrel of your weapon does not seem like it would be the intended outcome of a training event, but dumber shit has happened.
I am sure that there are blanks (especially in the context of a Hollywood armory) which are designed in such away to more closely resemble real ammunition, I’ve just never worked with something of that ilk, and it doesn’t jive with my (limited) understanding of how firearms work.
LustyArgonianMana