Wilson - Bushing Size (185-239) Size:217 APERTURE/DATUM DIA

APERTURE/DATUM DIA

Hand polished for smooth operation

To Hold Straight Walled Pistol Cases for Trimming

Lockable heavy-duty zippers provide added security

Wilson - Bushing Size (185-239) Size:217 APERTURE/DATUM DIASizes your case neck in the Wilson Neck Die or Wilson Bushing Type Full Length Sizing Die The Neck Die Bushing fits in the Neck Die and sizes the case neck to grip the bullet. To calculate bushing size Measure the diameter of a loaded round where the bullet sits in the neck (Ex. . 268). Now subtract . 002 to . 003 from that number. . 268 . 002 = . 266 Bushing Another way is to measure your wall thickness and multiply by 2 and add bullet diameter. Then