Hi there, thank you for your comment.
The -4 is deducted from the total result of the d20 you roll when firing your weapon.
I will further link you to the original rules of Violence, which are used for this adventure, and you may find helpful.
I am glad to be apart of your foray into RPGs! I hope you have fun reading and playing :)
Good point! The distance is more for firing range, but I can see how movement range would be helpful. Usually in play, when someone wants to move closer I will have them just spend their turn getting as close as they want. Its a bit more free form, so I hope this makes sense! There is also nothing wrong with setting a foot limit for players "i.e. you can run 50 ft during your turn."
