Is this on?
Did you not see any of the remakes of the battles of the colonies and England?
Back then a rapid fire meant a short hand-held that could be prep and shot wildly fast compare to its counterpart:
**What I gave above are LOADING times. This is different from firing separations. Because muskets are horrendously inaccurate, volley lines were a must. So firing separations (typically 20 seconds) also include firing commands being issued. Also, the times (and those for other answers) are based on troops equipped with load pouches. You had a small cloth bag with a premeasured amount of gun power. You would dump the contents of the bag into the musket then use the bag itself as the wadding. Especially in the 17th century, use of power horns and separate wadding was standard which significantly increased time to load. (https://answers.yahoo.com/question/index?qid=20080103065021AASkPpj)
I couldn’t find a better link–but do the math, the muskets would take longer than the hand-guns (or whatever they’re called); yet, consider that people would be lined up (3 thick) to be somewhat effective… so you want to compare today’s weapon’s destructive power to them yonder chunks?