Thread: ejector marks

I have a similar problem and have had for a long time.Although the primers are looking ok ,not too flattend and not too crated.
But I am always seeing ejecter marks and some times the bolt can be a little sticky but not all of the time.New Lapua brass,first loading. For some reason there is noticable marks ( shaving's ) from around the rim of the case also and minute specks of brass left on the bolt face.
The rounds are very accurate.I just cant work out what's causing these things.
Any ideas?
Anyone.