Erndog.....Sometimes carbon can build up in the throat area and cause accuracy problems by tearing up the bullet. You can remedy this by soaking the area with a patch saturated with Kroil, Hopes, or somthing similar that will not harm the bore. Let it soak for a couple of days if necessary, then wrap a patch around a bore brush that fits snugly and rotate the cleaning rod. If the patch comes out black from a previously cleaned bore, you know you have done some good. As far as the chamber goes, I like to use a 410 shotgun cotton brush and rotate with some Kroil or hoppes applied. Good luck......Rich
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