I want to know about a Flintlock Musket

Hello~
Could you tell me about damage of the Flintlock Musket?
How can I increase the damage?
I have a 28 Blood, 24 Phlegm, 12 Yellow bile and 24 Black bile .
Could you tell me about damage of the Flintlock Musket?
How can I increase the damage?
I have a 28 Blood, 24 Phlegm, 12 Yellow bile and 24 Black bile .