RCBS Neck Expander Plug .264 cal

The RCBS Neck Expander Plug .264 cal is a precision reloading component engineered for shooters and handloaders who demand consistency in ammunition production. This replacement expander plug integrates with the RCBS Neck Expander Die system to expand brass case necks to exact specifications. Whether you're preparing match-grade rifle rounds or volume-loading hunting ammunition, this .264 caliber plug ensures uniform neck diameter for optimal bullet seating and cartridge performance.

The expander plug works by widening the inside of fired case necks after sizing, creating the proper dimension for bullet insertion without excessive friction or gap. This intermediate step prevents case cracking, reduces runout, and promotes repeatable bullet alignment—critical variables in precision reloading. RCBS manufactures these plugs to exacting tolerances, and the .264 specification addresses the needs of popular cartridges like the .264 Winchester Magnum and similar bore diameters. The compact design (2.9 x 0.8 x 4.3 inches) fits seamlessly into a standard reloading press setup without requiring additional adapters or modifications.

This plug is essential for dedicated reloaders operating RCBS Neck Expander Dies across multiple calibers. The .264 cal specification fits shooters working with .264 Winchester Magnum, .264 Creedmoor, and other metric .26 x 4.8mm case geometries. Purchase as a replacement when your original plug shows wear or when expanding your reloading operation to include additional calibers. Pair with the corresponding RCBS Neck Expander Die for seamless integration into your bench setup.