No burst bubble. I shot the fiberboard target for several years with good results. I just don't remember having many of the problems others seem to have had.

However, "Pinwheel" has made a statement regarding "black" board that alerted me that I forgot to include a very important piece of information in my post. I don't know if the "black" board has tar in it, however:

MAKE SURE THAT THE FIBERBOARD IS NOT THE TYPE THAT IS COVERED WITH TAR-BASED PAPER OR HAS TAR IN THE FIBER!!!

Fiberboard without tar is available.