Records would keep calling even without drugs. We simply know a lot more about weight training these days. For heavyweigjts, Before 1940, the Olympic record in the snatch was like 210 lbs (vs 476 today). 330lbs in clean and jerk vs 586 today. Press record was 270. For reference, I cleaned and pressed 150, for reps, after like 3 months of having it in my training, and I ain't no strong man, not a heavyweight, and I ain't on any drugs.