Universal Case Loading Block The RCBSA(R) Universal Case Loading Block has been designed to fit most standard rifle or pistol cases, including the WSM, WSSM and Ultra Mag families of cartridges. The two-sided design offers three different case fits per side and will hold 50 cases. Short pistol cases fit in the raised upper portion of the block for easy access. The stepped holes accommodate large pistol and rifle cases. Description: Fit most standard rifle or pistol cases Two-sided design offers three different case fits per side Holds 50 cases Short pistol cases fit in the raised upper portion Stepped holes accommodate large pistol and rifle cases