old&slow huh-----sounds like me!
I shot bullseye (also indoors) in the late 50's. The course of fire then was as it is now---slow/timed/rapid. It was not always such (I think). The following is what I've been told. On the one hand, I'm trying to confirm it. On the other hand, I'm trying to find out when it happened.
In the beginning (of organized competitive handgun shooting), the course of fire was slow fire----only. (??) That, at least, makes sense; if as I'm led to believe, the generally favored handgun was the single shot pistol. (??) The sanctioning body was other than the NRA-----United States Revolver Association, maybe. (??) At a point in time (late "teens"/early 20's), (??) the NRA became THE sanctioning body---the course of fire was changed (from whatever it was) to slow/timed/rapid fire----as it remains. That too would seem to make sense, because single shot pistols fell from favor to be replaced by the revolver----and subsequently the autoloader. So, is that essentially what happened---and if so, when? And if not, then--------------------???
Ralph Tremaine