Editing Shell (projectile) (section)

===Separate loading bagged charge===
In separate loading bagged charge ammunition there are three main components: the fuzed projectile, the bagged charges and the primer.  Like separate loading cased charge ammunition, the number of propellant charges can be varied.  However, this style of ammunition does not use a cartridge case and it achieves obturation through a [[Interrupted screw|screw breech]] instead of a sliding block.  Sometimes when reading about artillery the term separate loading ammunition will be used without clarification of whether a cartridge case is used or not, in which case it refers to the type of breech used.  Heavy artillery pieces and [[naval artillery]] tend to use bagged charges and projectiles because the weight and size of the projectiles and propelling charges can be more than a gun crew can manage.  Advantages include easier handling for large rounds, decreased metal usage, while range and velocity can be varied by using more or fewer propellant charges.  Disadvantages include more complexity, slower loading, less safety and less moisture resistance.<ref name=":Hogg" />