Dispite what you will see in musket loading demonstrations I suggest you follow the same procedure as loading the rifle. I do not recommend using the paper cartridge for priming the pan of a musket.
In this video the load is too tighter fit in the bore, it should not be that tight. If you clean between shots with a rifle it should not be a tight fit. If it is too tight, use a thinner patch or a smaller ball size.
The COCK holds the flint, and the steel is also called the HAMMER. The term frizzen is a modern term.