The Dillon Precision Case Feeder Plate works on Dillon Progressive Reloading presses and are built with the quality you would expect from Dillon reloading products. ModelsSmall Rifle: Use for .204 Ruger / .222 & .223 Rem / .30 CarbineSmall Pistol: Use for .32 / .380 / 9mm / .38 Super cartridgesLarge Rifle: Use for 7.62mm x 39 / .22 - .250 and largerLarge Pistol: Use for .40 SW / 10mm / .38 Spc + and larger pistol cartridges. For .357 .41, .44 magnum, .45 Colt, use the spacer washer that is included with the electric case feederMagnum: Recommended for the Remington Ultra Magnum cartridges, WSM and related cartridges