well I don't have a big cock so I don't know how common this is or not.
However, based on just watching porn alone, it is rare any woman takes more than 7 or 8 inches....in fact I've seen many just take between 6 & 7".
Thus the reason I came here.
Also, while my gf was not fully aroused (she has been a lot hornier and wetter before) I believe she was sufficently tented so that I do go past her cervix, because while I was pushing it in, it moreless was stuck at 7"....then as she got hornier and I pointed it downward (she was on her back), the other 2" went it pretty easily.
Honestly, I was very impressed because after a minute of reach a dept of 9" she instructed me to push it in far and as hard as I could go.....meaning that she probably could have taken another 0.5" or so.
Also, I've read on this site and others, that women can take more of a real cock than a dildo because real cocks are soft at the head and bend more easily than stiff silicone cock......now I'm not into cuckolding or SPH but seeing her take a real 10" cock mite be very arousing.