As a male have you ever actually felt the difference when having intercourse with a vagina with a larger than normal circumference?

Yes you can feel the difference between different vaginas, but t's not just a case of tighter or looser. There are also differences in the texture of the vaginal walls, different depths, different muscle strength/control etc... and even the same vagina will feel different depending on things like arousal/wetness, or where they are in their monthly cycle.