Stormworks Build and Rescue: Shell Type Guide

In addition, autocannon shells and machine gun cartridges are divided into the same types, and work according to the same principle.

This projectile is the simplest piece of metal in a case. Deals damage only due to its kinetic energy. It has no additional damaging factors.

This projectile is a hollow container filled with explosives. Immediately after contact with the target, it explodes, causing huge splash damage in a certain radius.

(There is a sphere around the shell in which the blocks get damaged, so in the screenshot you can see a circle on the ceiling.)

This is a sub-caliber projectile designed to penetrate a large amount of armor. The damage is exactly the same as a kinetic projectile.

This shell is very similar to a high-explosive but contains much less explosives. After hitting the target, it weakly explodes, scattering fragments in all directions. Presumably, the best way to use it is fighting infantry.

This projectile contains an incendiary element, which with some probability (not always, but in most cases) sets fire to the target. It bursts immediately after impact and deals minor damage by impact.

Thanks to レモン猫 for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.