I have begun breaking in the barrel of my newly purchased Remington VS .223 and have noticed that it doesn't extract or feed as well as my .308 in the same model. Is this fairly constant with these two rounds or does a problem seem to be showing its ugly face? It sometimes doesn't seem to throw the round out when the bolt is slowly brought rearward. The round simply drops into the action. Any advice? It shoots wonderful groups and I am very happy otherwise.