Revision: Fix the Shells [5+1]
The tear-drop shape was a clever, if ultimately unsuccessful, idea. The instability during firing is remedied by making the body of the shell longer and more cylindrical to more closely hug the walls of the barrel. The nose is made more pointed to cut through the air, and the pointed tail is given a circular "hoop" around it to help prevent the shell from wobbling in the air. This should allow the shell to fly through the air more accurately and prevent jams on firing.
The embarassingly obsolete "flaming splint" ignition functionality is replaced by an "ignition cap". Transported separately from the shell itself, the ignition cap is a Wand of Thunderbolts hooked up to a mechanical switch. When ready to fire, the cap has the Wand inserted, the safety is deactivated, and the ignition cap is carefully inserted into the hollow nose of the shell. The cap is then latched into place with three external clasps (screw-in caps were considered and rejected, as our smiths can not reliably create universal screw joints with a tight enough tolerance since our metalworking is still done all by hand). This set up takes some time, and once armed the shells are very dangerous (artillery crews are advised to set up a minimum of 20 meters apart from one another), but they explode reliably every time and typically don't jam.
Where do we send al-Mutriqa?
What do we do with the Espionage Credit?