I have been going to the range with my father for the last couple of months. He has a new Ruger Mark III. We have put about 200 rounds thru it so far. I am not sure if it still needs some breaking in but it continues to have fail to feed and stove pipe issues on about every other clip. We have been shooting stingers, lapuas and even the cheap stuff. At what point do we take it back to the gun shop and complain?