Hi Chris,
Its fun to id the different gourds and sometimes we find one that hasn't been identified by shape. I do believe if we look long enough, someone will have it listed on another chart.
Look at the link below and click on 'education articles', then look below for gourd identification charts, 1 and 2. Let us know if you can identify your gourd.

Jan

Here is a link that might be useful: http://indianagourdsociety.org/

Maybe this will help. This is my first time to try adding a link so I hope it works.............

Here is a link that might be useful: Japan Gourd Chart

I had seen a couple of these charts and nothing seems to match exactly correctly. it is the shape of kettle, but the size of bushel...

try this site:
www.ozarkcountrycreations.com/Expand%20Gourd%20Chart.htm