Sorry Hurin, I guess I missed your reply. But I found it now!
IIRC, the various attack tables in the RMSS Firearms are keyed to various caliber firearms. There is a section in the book that talks about adding other firearms that are not listed in the charts. The suggestion is that you should find a gun in the charts that has a similar caliber & muzzle length (again IIRC) and use that to help determine what chart & other statistics to use for the "new" weapon. As far as I know, it's the only book in the RM line (beit RM2/SM2, RMSS/SM:P or RMFRP) that treats firearms in this way. As such, when I am in a world that uses firearms, Weapon Law: Firearms is my goto book.
Nightblade ->--