Resident Evil 5 Shotgun Damage: Detailed Documentation, Results, and Theory
Have fun reading all this. If you don't want to read that and you want to see my answer right away, skip to 16:08.
Since I haven't found an answer about the actual damage of the shotguns on the internet, I tried to find an answer myself by doing some tests and deriving numbers from them for comparison.
This video is a detailed documentation with video proof so you know what approach I used to find an answer if you plan to do further research on that.
Appendix:
The mentioned Wikia article (see the table nearly at the end of the article):
http://residentevil.wikia.com/wiki/Hydra_(SG)
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Resident Evil 5 Statistics For Fastynator
Currently, Fastynator has 15,452 views for Resident Evil 5 across 64 videos. Resident Evil 5 has approximately 18 hours of watchable video on his channel, roughly 13.96% of the content that Fastynator has uploaded to YouTube.