Tightened down the headspace and it helps. drybean has some oversized bb's for the ejector to give away in classified. That may help. Also, I looked for a .223 bolt head for several months and finally got Scott at Savage Gunsmithing to true a new one. Had to make a few cuts with the milling machine to fit. But, so far it is spitting out loaded and spent brass. The two cartridges are only a few thousands difference(?).