The use is the same as a bow and arrow. The musket uses musket rounds to shoot and these do very much damage. You can also attach a bayonet to it, so you can stab opponents too. You can only shoot a limited amount of musket rounds, then the musket will break. After you shot the round, you need about 2 seconds of reload time.
Holding down the right mouse button reloads it, and when reloaded, it increases your aim. The musket is crafted with a wooden part and an iron part.
Shoots further than a bow, and with a small deviation, but it has a reload time. Shoots crossbow bolts. Holding down the right mouse button reloads it, and when reloaded, it increases your aim.
Shoots fast and accurate. Has a small reload time. It shoots blowgun darts, which are poisonous. This means that when you hit a mob, he becomes ill. If a mob is ill, he will get damage over time, and has a small chance to heal from the illness.
The poison will not kill the mob, but often the mob remains with half a heart left. The dart itself doesn't do much damage.
Reloads like the musket, but quicker. Uses blunderbuss shots as ammunition. When fired, it shoots 10 small projectiles with a wide spread. Shooting a mob from nearby deals much more damage.