Timing is this possible?

Run down i have a 440 with mallory dist, MSD box and coil. I got it all broke in new motor. Now! I made my marks on my balancer per the Math that Tony helped me with. All i did was set the inital and stab the dist when installed. So at 3000RPM timing light on #1 cyl my timing marks that were made line exactly! But....Ive never even moved the distributor to set total timing. Is it possible that its dead on from the start?