What is the deal with a metal cannonball exploding? Is it just movie BS effects or was there really powder inside and some sort of fuse or something? If it's real how
![General | OT- Civil War exploding cannonball? | Practical Machinist - Largest Manufacturing Technology Forum on the Web General | OT- Civil War exploding cannonball? | Practical Machinist - Largest Manufacturing Technology Forum on the Web](https://www.practicalmachinist.com/forum/data/attachments/21/21503-51fc476299cfd6978315380c9021bce5.jpg)
General | OT- Civil War exploding cannonball? | Practical Machinist - Largest Manufacturing Technology Forum on the Web
![Explosive cannonball with a delayed fuse. Korea, invented during the imjin war period of Josun kingdom(1592~1910). It contains sharp iron shards inside in order to make grenade-like effect. More info in the Explosive cannonball with a delayed fuse. Korea, invented during the imjin war period of Josun kingdom(1592~1910). It contains sharp iron shards inside in order to make grenade-like effect. More info in the](https://i.redd.it/qklo3pnkdwu81.jpg)