Wilson Case Holders hold the case square to the cutter face for trimming as well as inside neck reaming, case mouth deburring, and military crimp removal. Standard Pistol Case Holders require that cases be tapped into the case holder firmly to hold the case securely due to the straight wall construction. We recommend Q-Style case holders when available for pistol cartridges.
Big Book Catalog, Issue:67, Page:511
Sinclair, Issue:4B, Page:012