Hard to tell from the pics., but. It looks like the extractor is slightly angled from the tip back to the rest of the part! I had a problem like that on another firearm and filed the extractor so that is was at least parallel to the inside of the rim. Making sure that there were no sharp angles other than at the tip. That or another , new, extractor may solve the issue. Do not know about the issue of bulging cases.
Sorry if this is not clear, my descriptive verbage lacks clarity sometimes
Sorry if this is not clear, my descriptive verbage lacks clarity sometimes
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