Aligns Reamer Concentric To The Bore For Accurate Choke Adjusting Or Removal
Precision ground bushings center the Gilchrist reamer in the bore. Oversize, .750" diameter, blank bushings can be turned down to fit 12 gauge bores with odd diameters.
Big Book Catalog, Issue:66, Page:495
New Product Supplement, Issue:566, Page:018