View source for Gunslinger Handbook (3.5e Sourcebook)/Gunpowder Armory

==== Steambolt Rifle ====

A steambolt rifle is a big, powerful steam rifle designed for power and fights in extreme climates. Its massive bulk make it extremely hard to use for even a tempered soldier, and only through training can it be used effectively. A steambolt rifle is slow to reload, but is capable of surviving extreme environment (as the parameters defined by [[SRD:Endure Elements|''endure elements'']]). A typical steambolt rifle requires rifle cartridges, but can be loaded with rocks or other improvised ammunition, although doing so cause the weapon to misfire on a roll of 1 and 2 and doubles the chance of damages the weapon or jamming the weapon. 

Normally, operating a steambolt rifle  requires two hands, however, you can shoot, but not load, a steambolt rifle with one hand at a –4 penalty on attack rolls. You can shoot a steambolt rifle with each hand, but you take a penalty on attack rolls as if attacking with two one-handed weapons. This penalty is cumulative with the penalty for one-handed firing.