Lyman Brass Smith Bushing for Case Trim Xpress #4 .300 AAC .17 Rem Fireball

The Lyman Brass Smith Bushing for Case Trim Xpress #4 in .300 AAC and .17 Rem Fireball is a precision reloading component designed for shooters and handloaders who demand consistency in case preparation. This bushing assembly integrates with Lyman's Case Trim Xpress system to provide accurate, repeatable case trimming across these specific cartridge specifications. Uniform case length is critical to load reliability and firearm safety.

Engineered as a caliber-specific bushing insert, this component ensures proper alignment and consistent trimming depth for both .300 AAC and .17 Rem Fireball cartridges. The #4 specification positions the cutter head at the exact reference point required for these intermediate and specialty rifle rounds, eliminating over-trimming and case neck damage that can compromise accuracy and longevity. The compact, lightweight design (0.04 lbs) allows for quick swaps between cartridge types without requiring complete system recalibration.

Law enforcement armorers, military support personnel, and competitive marksmen benefit most from this bushing when processing large quantities of brass for match ammunition. Installation is straightforward—the bushing seats directly into the Lyman Case Trim Xpress system, requiring no tools or additional setup beyond the initial installation. This makes it an ideal choice for reloaders who work with multiple calibers.