1. Not to sound like an old lady, but I believe that focussing on speed, particularly in the case of someone who is just venturing into reloading, is at best distracting and, at worst, a bit dangerous.
2. That said, I couldn't begin to answer the question because, at least for "normal" pistol calibers (.38, 9mm and .45 ACP), I don't reload in one sitting. Rather, when I come back from shooting I decap all the brass I've shot and put them in the tumbler. (This is right after cleaning the guns.) When they're done (or when I'm ready, whichever is later), I dump and sift the cases, visually inspect them, and then run them through the sizer and beller. At that point they go into a plastic container until I've accumulated a couple of hundred. At that point I load up the primer tubes and load them all up.
At that point, there will be between 500 and 2,500 rounds of decapped, tumbled, sized and belled brass (all of the same caliber) to reload. If there are more than 600, I stop after 600 and take a break; usually until another day. As an estimate, the time to load 600 rounds of decapped, tumbled, sized and belled pistol brass is about 2 hours.