Ignoring how the stone age people acquired gunpowder (see this question), and manufactured cannons, (see this question) would it be possible for them to produce and fire effective shells made of stone and filled with gunpowder, which would explode after around ten seconds (time to light shell, load cannonball, and fire cannon), and actually result in significantly more damage than a normal cannonball?

Ignoring how the stone age people acquired gunpowder (see this question), and manufactured cannons, (see this question) would it be possible for them to produce and fire effective shells made of stone and filled with gunpowder, which would explode after around ten seconds (time to light shell, load cannonball, and fire cannon), and actually result in significantly more damage than a normal cannonball?

I am mainly concerned about manufacturing an effective fuse, and making the walls thin enough to release a lot of energy from the explosion/create shrapnel, but not simply shatter when fired from the cannon.

Ignoring how the stone age people acquired gunpowder (see this question), and manufactured cannons, (see this question) would it be possible for them to produce and fire effective shells made of stone and filled with gunpowder, which would explode after around ten seconds (time to light shell, load cannonball, and fire cannon)?

Ignoring how the stone age people acquired gunpowder (see this question), and manufactured cannons, (see this question) would it be possible for them to produce and fire effective shells made of stone and filled with gunpowder, which would explode after around ten seconds (time to light shell, load cannonball, and fire cannon), and actually result in significantly more damage than a normal cannonball?