(5) (a) "Dangerous weapon" means any item that in the manner of its use or intended use is capable of causing death or serious bodily injury. The following factors shall be used in determining whether a knife, or any other item, object, or thing not commonly known as a dangerous weapon is a dangerous weapon:
(i) the character of the instrument, object, or thing;
(ii) the character of the wound produced, if any;
(iii) the manner in which the instrument, object, or thing was used; and
(iv) the other lawful purposes for which the instrument, object, or thing may be used.
(9) (a) "Firearm" means a pistol, revolver, shotgun, sawed-off shotgun, rifle or sawed-off rifle, or any device that could be used as a dangerous weapon from which is expelled a projectile by action of an explosive.
The best advice I have ever heard about what ammunition to carry is to find out what your local police use and get the same.