Hey mate. I had a problem with my 597 22lr being a jam-omatic.
I brought a Volquartsen extractor for it for about $30 from trademe a few years back, it took about 30mins to change. Now it will eat anything.
This is what you will be after
http://www.reloaders.co.nz/Volquarts...&category_id=0
Should fix your problems.