@Kaladryn With a 95% confidence interval, extent of bioavailability are, respectively: 0.90, 0.95 (oral route)...
ALKALAY, D., KHEMANI, L., WAGNER, W. E., & BARTLETT, M. F. (1973). Sublingual and Oral Administration of Methyltestosterone. A Comparison of Drug Bioavailability. The Journal of Clinical Pharmacology and New Drugs, 13(4), 142–151. doi:10.1002/j.1552-4604.1973.tb00075.x
You're unlikely to find individual (as you though claimed) bioavailability/PK data for Dbol, Winstrol, et cetera because all 17α-AAs are governed by the same chemistry and principles. Methyltest is frequently cited as the reference compound.
I know metabolism of androgens is easy as hell for someone of your intellectual capacity to know all there is to know, but somehow I reckon I'm actually on fairly firm ground here.