Gangfight Games put up an updated version of their Blackwater Gulch rulebook in pdf format up on their website.
From the update:
The new rulebook is finally done! Visit our website at www.blackwatergulch.com to download it!
There were quite a few enhancements. We put a lot of work into this new version, it’s actually been proof-read this time 🙂 You’ll find a bunch of photos of our new figures and concept art too. Hope you enjoy it!