The Home Machinist!

Hi---I have a 20 gauge o/u--the opening lever sticks in the closed position
Very few shells have been fired
If you take off the barrels the lever works just fine
Any ideas ?????
Sydnet

Hi---Thanks for the help
I appreciated
Sydney

Looking for information on how to draw mill chain sprockets--h78-14 tooth
for example
I drew them on paper years ago but have long since lost
information such as angles;radius ect
Thanks
Sydney

looking for information on how to draw mill chain sprockets
These are a sawmill sprocket--h78-14 tooth for example
I did them years ago but have long since lost the info
Any help or source would be appreciated
Thanks Sydney