This was not a surprise. I've been in touch with this person off and on for over 10 years.
We know how we connect. Her maternal grandfather and my paternal grandmother were siblings.

According to this second cousin, there is some thought that our shared great grandparents may have been cousins.

We share 309.67 cM and the longest segment is 33.72.

Is this typical for a second cousin match?
I guess I want to know if there is a range and does this fall at the higher end.
This may be a stupid question. I'm a real novice concerning DNA.

I read on FTDNA that they do make adjustments for Ashkenazi Jews because of the intermarrying.
I am not Jewish. One of the admixtures on GEDmatch did give
me a small amount of Ashkenazi, but only one.