You would not be far wrong.
As I said, the preferred method of carry was what today we call Condition 3 -- loaded magazine in the magazine well, chamber empty. But IF immediate employment was expected, or if there was a temporary cease fire on the range, then the safety lock was to be used. And of course, if a mounted trooper was firing and needed to make the pistol safe, he used the safety lock.
The point is, hammer down on a loaded chamber (Condition 2) was not authorized -- and for good reason.