Getting to where we are in Ms. Primitive Weapons was a road with several twists. It started as a BPCR addition. Then the powers that be found out how little BPCR ammo was out there, so they went ahead and allowed smokeless powder. The pre-1900, exposed hammer, .38 or larger, single-shot requirements remained intact. So, everyone ran out and bought Handi-Rifles and Contenders. Much to many people's dismay, they discovered only after they bought Contenders that they were designed after 1900....ouch!
Within a few years, they decided to drop the pre-1900 part because for all applicable purposes, guns like the Contender were exactly the same as guns such as the Handi. So far as I know, they won't let anyone slide on that hammer issue.
