Regardless which inletting medium you choose do not necessarily remove every mark. Read the mark and determine why it is there. Mike noted taking lthe barrel straight in or out for example. The marks are just that -marks. They are giving you some information which you need to translate / evaluate.
Chisels need to be shaper. Also, it makes a difference which direction the bevel side of the chisel faces. The bevel side tends to push wood sideways which needs to be toward the waste side of the inlet usually.