SASS Handbook, Page 37, section: Safety Practises
6. Six-guns are always loaded with only five
rounds and the hammer lowered and left resting
on the empty chamber. Five shooters
may load five rounds, but the hammer must
rest on a dummy chamber or safety slot in the
cylinder so the hammer does not rest on a
live round/cap.
This is straight from the latest manual. Before we spent a lot of time and energy developing these conversion cylinders, we made a prototype and took it to the TG meeting at the SASS Convention to get a ruling on the use of this five shot cylinder for SASS Use. It was designed with ten stop notches, five of which lock the cylinder out of firing battery. It was approved by the TG's and the rules were ammended to reflect approval for use.
This also made the Kirst five shot Remington cylinder with the safety chamber a "SASS Legal" item.
If you are interested in purchasing one or more of these cylinders, we can fix you up, though they are not on our web site yet. Drop me an e-mail or call and I'll get you fixed up.