British Buckingham WP
The English "B" with powdered incendiary mix is fine (WW2 Blue tip with "B" in headstamp), I meant to say the early Buckingham WP rounds with the stepped jacket. They have been known to leak. German B-Patrone have had recorded leaks in the base seal as well, though uncommon. I have sent Bill Woodin examples of leaking B-Patronen that have ignited the powder, spliting the case and shredding the 15 round box and seriously denting the othe rounds. The bullet penatrated an ammo can, with just the tip showing through. It did not detonate. Stuff is fun but must be treated with respect it deserves! JH