RCBS Pro Chucker 7 Shell Plate - #27

The RCBS Pro Chucker 7 Shell Plate #27 is a precision indexing component designed to configure the RCBS Pro Chucker 7 Auto Index Progressive press for reloading .270 Winchester, 7x57 Mauser, and related cartridges in that caliber family. This shell plate is the critical interface between your reloading press and your cases, ensuring precise cartridge positioning through each stage of the reload cycle.

Shell plates in progressive press systems must match the specific case head diameter of your ammunition to function correctly. The #27 designation indicates this plate is engineered for the larger rifle magnum family cartridges. RCBS manufactures these plates to tight tolerances to prevent case slippage during indexing—a critical safety and accuracy factor. The compact 3.7 x 4.2-inch footprint integrates seamlessly with Pro Chucker 7 toolheads. Proper shell plate selection is non-negotiable; using the wrong plate size can cause incomplete primer seating, powder measure errors, and inconsistent case advancement.

Reloaders working with .270 Winchester and similar rifle cartridges depend on shell plate compatibility to achieve consistent, safe ammunition. If you're setting up a new Pro Chucker 7 system or switching between caliber groups, verify your shell plate number matches your cartridge before assembly. This component is essential for anyone handloading rifle ammunition on an RCBS progressive platform and seeking precision-matched tooling.

RCBS Pro Chucker shell plates are considered industry-standard indexing components for serious reloaders. Proper maintenance—keeping the plate clean of powder residue and case shavings—extends service life and maintains the press's reliability across thousands of rounds.