PCT, more specifically, recovery is a function of time not dosage. You need to give plenty of time for your HPTA to restart and plenty of time for levels to normalize before you withdraw SERM's from the equation. For this reason, a simple PCT of nolvadex at 20mg Ed for 6-8 weeks followed by a taper off will yield the most favorable results.
If you feel the need to introduce HCG in order to assist in recovering from testicular atrophy, then you need to do this toward the end of your cycle, but not after the AAS has cleared.
I've studied this quite a bit and have even experimented on myself to try and understand the recovery process better, and after nearly a year and over a dozen blood tests, I consider the gold standard of PCT's to be:
250iu HCG Ed or 500iu Eod for two weeks (last two weeks of the cycle) followed by 8 weeks of nolvadex at 20mg Ed. Concluding with a taper off of the nolvadex. The taper should be a 50% reduction in does every week until reaching 2.5mg, then off.
there are some very wise men here who've been running this identical PCT for years, and who will roll their eyes at my labor into what they consider common sense, but I just wanted to know what was better about such an approach. And let me tell you, this is money! Simple, safe, and effective.