Heavy Cannon was a weapon skill in Monster Hunter P3 that was usually used to attack monsters. Different types of muskets had different characteristics. [1. Spreading Heavy Cannon: This skill will expand the attack range and cause the monsters within the attack range to receive the same damage.] The Dispersion Cannon required a large number of cannons to be used and the attack had to be focused. [2. Normal Heavy Cannon: This skill will push the attack wave forward and cause continuous damage.] Usually, a heavy cannon requires a large number of cannons and needs to be focused when attacking. 3. Special Type of Heavy Cannon: This skill allows you to use additional cannons to increase your attack power. The special type of heavy artillery required the player to obtain more cannons in the game and to maintain focus when attacking. The main differences between the types of muskets were in their attack range, attack speed, and attack power. Players could choose different skills based on their game style and tactics to maximize their advantage.