Sinclair 30 Calibre Carbide Neck Turning Mandrel (.306") Bullet Style_Cone Point Flat Base O-ring seals the chamber and

O-ring seals the chamber and prevents solvents from contaminating the action and trigger and helps to keep the bore guide firmly in place

this projectile fills a long-neglected niche

The original fastest bore cleaner on the planet has a new home

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Sinclair 30 Calibre Carbide Neck Turning Mandrel (.306") Bullet Style_Cone Point Flat Base O-ring seals the chamber andThe shape and surface of all Sinclair mandrels is the result of years of experimenting by many expert handloaders. Their Carbide turning mandrels are precision ground from solid carbide stock, which yields even closer tolerances. All Carbide mandrels are ground to . 002" under bullet diameter. Adjustments on the Sinclair Premium Neck Turning tool will be more consistent with carbide mandrels due to the tighter tolerances of the mandrels.