Redding Reloading Steel Neck Bushing Features The Redding Reloading Steel Neck Bushing is sized to a .288 inch diameter one of many sizes available in .001 inch increments allowing a reloader to match neck sizing precisely to their specific brass and bullet combination rather than relying on a one size fits all approach. Heat treated steel construction gives the bushing the hardness needed rated at Rc 60-62 to withstand repeated sizing cycles without excessive wear. The sizing surface is hand polished to reduce the effort required to size cases which also helps minimize brass working and extends case life. Because this bushing is self-centering it helps keep the resulting neck tension even and symmetrical around the case. Designed to work within RCBS Gold Medal Match series dies this bushing lets reloaders fine tune neck tension to their exact preference rather than accepting the under or over sizing a standard die can produce on brass of varying thickness. More precise neck tension translates to more consistent bullet release during firing which is a meaningful factor in long range accuracy. Because the bushing is changeable reloaders can build a small set of sizes and swap between them as brass lots or bullet styles change. For precision reloaders seeking tighter group sizes and longer brass life this Redding .288 inch steel bushing is a worthwhile addition to the reloading bench. Redding Reloading Steel Neck Bushing Specifications Manufacturer: Redding Reloading Model: Steel Neck Bushing Diameter: .288 Die Type: Die Bushing Available At: GrabAGun