This high quality adjustable reamer is the perfect tool for opening up a shotgun's fixed choke constriction. By turning both of the adjusting nuts in the same direction, the reamer's diameter can be made larger or smaller. For best results, begin with the reamer set to a slightly larger diameter than the barrel's original constriction. Adjust the reamer a little bit at a time, removing material incrementally until the desired diameter has been achieved. In order to avoid damaging the barrel, work slowly, use cutting oil generously, and make sure that your tap handle is of good quality.
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