I know you were looking for full castration but I thought I would throw in my 2 cents worth. I've been on chemical castration and FHRT for about 2 years and my testicles have shrunk to about 1/4 original size and T level around 50. My best guess about scrotum shrinkage is about 30%.

LindaLeah

crankshaft (imported) wrote: Sun Mar 23, 2008 1:26 pm after reading the thread on penis shrinkage, it got me wondering about scrotum shrinkage, I bounced this off of Jesus, and this has his blessings, we can tally up the results here and post the over all results later on

My sac was never very large, but after 8 yrs w/o testicles or inner sacs, it's shrunk to about the size of the end of my thumb (say, 40% of pre-castration size), and that's even w/ the insertion of a couple of rings in it (6 ga; 3/4" diam). The underside of my cock is totally smooth when I'm hard. OTOH, it sometimes hangs as a much larger flap of skin in warm weather. Also, I once in a while engorge it with fluid, and it still easily holds a litre. Scrotal tissue is quite flexible.

It seems though that most others seldom notice the lack of balls, or at least they don't let on that they do.

I'd say on average it's about 1/4 the size it used to be (so 75% smaller). When it's warm it hangs a bit more, and when it's cold or I'm excited it pretty much disappears. That combined with my smaller penis (about 2/3 its previous size) looks really cool.

After 9 months, mine is perhaps 25% smaller.

Falcon

13 y castrated now, always on hrt.... i would say about 10% max! i did a saline injection not long ago when it was about the size of the scrotum i had with the balls in the skin wasn't stretch all the way yet... i guess everyone's different