How much you loose on average length do to position

Hi, I am wondering and can’t figure out how much really you would loose in positions like missionary and doggy style for example if your penis is 7” BPEL and 6.5” NBPEL? How much could your really insert? Obviously you not gonna be able insert all BPEL !

If you mean how much does the fat pad limit penetration, perhaps try making a ring with your fingers around your shaft and push into it as hard as you would be pushing into your partner to see how close you can get the “ring” to your body.

Except in extreme cases, I think the fad pad it limits the visual more than the physical penetration. It’s pretty “squishy” so I can’t see a penis with a half inch fat pad, once compressed, feeling any different or going any deeper than a penis with a zero inch fat pad.