What distance can a civil war cannon shot?

950 miles

NEW RESPONDENT

A few examples

rifled, muzzle-loading, field artillery:

three-inch gun and ten pound " Parrot" guns - over 4 kilometres,

twenty-four pound "Coehorn" mortar - over 1 kilometre.

Rifled heavy muzzle-loading, field and siege artillery:

100, 200 and 300 pound "Parrot" guns - over 10 kilometres,

10 and 13 inch mortars - over 2 kilometres.

80 pound Whitworth - about 14 kilometres.

rifled, breech-loading field artillery:

12 pound Witworth - about 10 kilometres.