When I finally got a chance to shoot the Remington 514 I bought for my grandson's Christmas present, I found that fired cases didn't extract at all. I figured it was due to a dirty chamber so I hit with a bronze brush and Hoppe's but there was no improvement. The extractor moves freely but doesn't seem to engage the case rim. Loaded rounds will drop out of the chamber by their own weight so the chamber seems okay. Fingernail extraction is working for the time being.
Suggestions?