FORSTER CASE NECK GRAPHITER TOOL
When sizing a fired case, pulling the expander button through the case can present a problem because residual deposits left from firing can create friction when the expander is withdrawn. In a worst case scenario, that friction can cause distortion or stretching of the case neck. Properly lubricating the inside diameter of your case necks is the answer, but oils are not recommended because of the possibility of gunpowder contamination.
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