Its like an original! Unless you plan on carrying it, I wouldn't worry too much. go to the range, load 6 and bang away. IF you do want to carry it or hunt with it, then the safest thing is to load 5-you don't need the 6th unless you're in Indian territory. Most of the original colts I have handled are missing pins. They wear down and some appear to have just fallen out. But my guess is once they wore out, they still loaded 6-especially if you were somewhere where you really needed it. Id never do that on a repro unless it had the one critical missing thing-heavy mainsprings. Original hammer springs are A LOT heavier than repros. This made ignition more reliable but it also made them safer to carry in that the hammer was more snug and was a lot harder to jar or move. So if you set the hammer on a cap it would really take some force to move the hammer and set it off(unless it was dropped) ; the only issue would be getting that extremely heavy hammer gently onto that cap, which is where letting it down on the pins is definitely safer and one reason why I think the pins on originals are all wore and peened down. Combine that with a proper holster and they would have been pretty safe to carry pins or not. A lot of people used slim jim style holsters and other open holsters, but a lot of people used flap holsters too. You see pictures of guys in town with the flaps folded back. These offered protection against the elements and so long as the flap was closed it made them very secure and would have protected the hammer.