If the bullets are getting rifling marks your COAL is too long.The extractor may have gotten bent if you were hammering rearward on the bolt to get it to extract. If you have extraction issues with a fired case it is one thing but if it is on an unfired case it is something else.

You may also want to find a real gunsmith to get information from, the extractor has to slide outward to go over the rim, then the detent ball and spring push it back onto the rim so it can pull the case out when you pull the bolt back.