Gun ideas WIP for Galvatron66

this is the idea i am trying to go for as a cannon that has shells, a rammer, breech, ect. if there are any other ideas for this design to make it complete, i will greatly appreciate it! Happy building!

to use:
1. close breech (z bar)
2. fire weapon (F)
3. unload shell (x bar)

use the bars forcefully when activating. remember, this is not a fully working design. please be easy on it!