What was the Most powerful civil war weapon?

The most powerful weapon used during the American Civil War was arguably the rifled musket, particularly the Springfield Model 1861. Its rifled barrel allowed for greater accuracy and range compared to smoothbore muskets, making it deadly in the hands of trained soldiers. Additionally, artillery pieces like the Parrott rifle and the Napoleon 12-pounder cannon significantly increased battlefield lethality, delivering devastating firepower to support infantry operations. Together, these weapons transformed military tactics and contributed to the high casualty rates of the war.