Forster Hot Pilot #277 For Hand Held Neck Turner For .277 Diameter Bullets. At ignition it is imperative for the case neck to expand allowing the release of the bullet. If one side of the neck is thicker than another the bullet will release prematurely causing a misalignment of bullet-to-bore. When this occurs accuracy is dramatically impacted. Mandrels which are the steel points are ground 0.002 to 0.025 inches smaller than the diameter of the bullet providing excellent performance. Specifications for Forster Hand Held Neck Turner: Manufacturer: Forster Quantity: 1 Features of Forster Hand Held Neck Turner: Precision machined with special angles and reliefs designed specifically for neck turning; cutter approach angle allows turning right up to the case shoulder. Micrometer adjustment knob allows fine adjustments in either direction; easily adjustable to .0005 inch. Index marks at increments of .001 inch are clearly stamped on the tool body. Dedicated Pilots are sold separately .002 inch to .0025 inch smaller than the bullet diameter. Package Contents: Forster Hand Held Neck Turner Forster HOT2277: Hot Pilot #277 For Hand Held Neck Turner For .277 Diameter Bullets