I am no expert, but mine failed to extract until totally cleaned. Theses guns wont suffer much fouling and the lead bullets have a lot of coating on many brands. I scrubbed the barrel (chamber) in front of the bolt and cleaned it thoroughly and it right back to perfect ejection. A few passes with Hoppes and a dry swab did it. Mine fouled within fifty rounds. At the range similar experience with other Savage shooters of rimfire bolt actions. I only speak for myself.