There have been a number of studies in Europe and Asia using 200 mg a week of test e as a form of male contraception.
In one of the more recent comparative studies, 200 mgs of test e per week resulted in azoospermia (sperm levels that is not measureable) in 60% of the sample of participants in the study within 3 months and 90%+ were void of sperm within 6 months.
Look in Pub Med for the journal articles. There is some interesting reading in them.
Grant it, these studies did not involve subjects using HCG.
Regards.