i dunnonwhat George's experiemce tells him. but my limited experience (45, 230 gr. gold dots, 357 sig 125 gr. gold dots) i found that the first round usually wnet a bit high but never significantly (shooting through crown vic windshields) and subsequent shots were pretty close to poa. nevwr had a peoblem keeping any round in the a zone out to 15 feet from windshield.
fmjs were different as they were damned unpredicrable.