Well, this shotgun is possessed, or I am. Finally got around to messing with this and drove out that pin. Like I figured, a small part popped out. I had made a plastic bag to catch small parts like that, so I was patting myself on the back.
I took the bag and reciever in to the house and.....NO LITTLE PART!!! Pounding on the reciever tore holes in the bottom of the bag....
Now, I'm on a hunt for a piece that's about 1/4"×3/8" and God knows where!!!
It's not the pin, that's no problem anyway. It's a little part that holds the shells in the magazine.
I've made many passes with one of those wheeled bar contraptions like roofers use. Hit nooks and crannies many times with one of those telescoping magnets mechanics use.
I hate to do it, ( because it's embarrassing, took the paint off one side, and lost a part, ) but I may have to take it to a gunsmith to get a replacement part.
I can't even find a breakdown for this shotgun. I don't know what that part is called, or where to get it.
The search area goes from my tablesaw, across 20' of lawn, a broken down back steps, through the kitchen, into the living room, and the recliner.
DOH!!! A buddy linked a breakdown of a Bennelli and it looked like the part I have. IDK, maybe I just saw the end of that part poking out.
So fiddling around with it, I'm 99.9% sure I have all the parts ( excepting a 3/32 × 1" rollpin, which is no biggie) so, time to clean it all up, repaint the reciever and reassemble.