the other day, I was sitting playing with one of my Winguns, wishing that it would give me a reason to use it, but with only 6 shots, a slow reload, and not being accurate enough to really hit much of anything, it resided on my shelf and not in my holster, but I had an Idea! so I pulled apart the shells and started dremelling
my aim was to open up the inner hole so that instead of acting as just the air passage leading to the BB up front, I can just fill the whole shell with BBs (4 BBs, specifically)
the reason for going in from the back is to not damage the retaining ring at the front that holds the BBs in
I found it best to use a pointed dremel as it guides itself straight down the middle so you wont go through the side of the shell, I found a drill difficult to use to do this
you have to go slow, or you'll melt the rubber, but if you do them in big batches, you can dremel one for a few seconds and then just go on to the next one and keep rotating to let them cool down
Finishing touches (I didnt bore out the brass shell at all, it just looks that way)
And with this, my wingun revolvers go from useless novelty toys to super compact shotguns! It also solves the velocity issues, bringing them from 400-450 to 260-320 depending on barrel length
I just got back from gaming my new and improved winguns at Ultimate Airsoft and the results were fantastic, a great spread of BBs as fast as I can pull the trigger!