Bro I've used test, deca, winny, masteron, tren, dbol & eq...basically everything there is. I've put on 34lbm lbs since last october 100% naturally. Steroids didn't do jack spit for me. All pro bb'ers are are hyper-responders w/ one in a few million genes to be pro bb'ers. That's all, no big secret drug, routine, suppl....nothing.
I use (0) supplements, drugs, nothing. Hell I don't even eat meat (except pizza tippings), drink milk or low carb horse-pucky.
I do use DHEA which technically is a "steroid" but not for bb'ing, nobody uses DHEA for bb'ing I'm aware of. Although I do think its helped me a helluva lot.