I have the rifle that these replaced the model 40 22 hornet. It is a single feed model but it only extracts if I'm lucky 1 out of 10 rounds(can't go to range with out a rod). It has been back to the factory and the problem persist. As far as accuracy maybe a 1 1/4" @ 100 on a good day.
My next step is to lightly polish the chamber to see if it will help the extraction problems and then try different loads for the accuracy issue.
My only advice is to contact Savage send it back and hope for the best. Their CS is fantastic and turn around time is around 2 weeks.