[Smokin' Joe]

Compared to a .223 and a .45, I'd say .30 is medium. At .308, it is almost exactly in the middle.

I continue pointing out that "medium" may not be confined to .38/9mm or .40 caliber projectiles. In the absence of ballistic data, any assumptions about what the coroner meant by "medium" are useless.

[TexasGator]

“I continue pointing out that “medium” may not be confined to .38/9mm or .40 caliber projectiles.”

And I continue to point out that you have provided NOTHING but your opinion.

[Elderberry]

I found this:
Forensic pathologists commonly describe bullets as small (.22, .25), medium (32, .38, 9mm) or large (.40, .45, .50).

This was from:

Practical Pathology of Gunshot Wounds

http://www.archivesofpathology.org/doi/pdf/10.1043/1543-2165%282006%29130%5B1283%3APPOGW%5D2.0.CO%3B2

Note it said “commonly describe”