Re: ruger jam
Extractor tuning works every time and is easy to do.
Instead of looking like this:
Just put the extractor in a vise length wise and compress it until the fit is right.
Then it will look like this:
The reason this works, is by fitting the extractor so that is securely holds the case to the bolt, the ejector will make positive contact with it every time.
Since the extractor is holding one side of the brass, the impact of the ejector on the opposite side results in it being flung at a 45 degree angle out of the ejection port.
When stove piping occurs in a 10/22, the brass travels to the rear with the bolt, but instead of being flung out the ejection port, the ejector just knocks the brass forward because the extractor is not in the properly engaged with the brass.
FWIW,
Since the 10/22 is a blow back action, the extractors only job is to remove un fired cartridges and to perform the function outlined above.
(It extracts nothing during the firing sequence since the brass is what is actuating the bolt.)
*(Images taken from Rimfire Central.)