Oh cool, I can still defend then!
I am not entirely sure how to find items. They seem to 'spawn' on users' blog pages. Like if you go to their personal blog, and keep that page opened for a while, after a while there is a chance of loot popping up. You can go to the official @steempunksnet account and it will spawn faster there but only useless items. Real weapons and other stuff spawns elsewhere. I only found this shotgun so far, nothing else. It took about 30 minutes of keeping a screen open on somebody's page for it to appear in loot boxes