Tim.
The hinge pin is like the lord, he is always there even if you don' see him. So the bible says.
In the bottom picture you can actually see the hinge pin, if you look good.
The pictures are even worse after the GB progam sizes them. Well that cheap didgi leaves much to be desired too.
Tim, I dig out a URL about cleaning the 17 and some stuff they used in the bore, Don't remember where it is but it is burried in my computer somewhere.
On Monday I am going to shoot the gun, fire 10 and clean, three repetitions.
Too bad but my bore scope does not fit into a 17 bore.
I been bussy making goose loads, goose season is open today, be going in a couple of weeks supposed to snow next Friday dowm to 33F.