I was at the range the other day with my 15-22 and had a FTF with a round of Federal 550. By the way, this was the first FTF in at least 3 boxes of 550's. When I pulled the bolt back the cartridge did not extract from the chamber. I cycled the bolt several times but the cartridge remained stuck in the chamber. I then used my pocket knife to pry out the round although it didn't take a lot to pull it out. I reloaded this round into the rifle (rotating it from the first strike) and it fired without a problem.
To find out if the extractor was working, I cycled several rounds through the rifle by pulling the bolt back an letting it go. All these fresh rounds extracted without a problem. I realize that when the firing pin hits the casing it will cause some distortion but I would think the extractor should be strong enough to still remove the cartridge.
The rifle has run well ever since I made some slight ejector adjustments and replaced the springs with a set from JP about a thousand rounds ago. Has anyone else had this problem on their 15-22?