New guy. Got 50 cal kentucky percussion. How many shots avg before must totally clean/ swab bore with water using pyrodex?

How often should I use cleaning patches and/ or brush- between shots?
Must I remove and clean lockafter everyshooting session?

Pyrodex is synthetic and does not contain sulphur like black powder- so no acid to corrode barrel but can produce hard deposits. Why is it necessary to clean immediately after shooting- should be able to wait weeks. Why will parts rust ifdon't clean and oil? thanks!