RCBS Headed Decapping Pins. This factory replacement steel decapping pins for RCBS dies fits: RCBS Reloader Special Dies. RCBS Cowboy Dies. All RCBS "Precision" dies with the following exceptions: 6mm PPC, 7mm TCU, 35 Whelen, 357 Sig, 358 Winchester/356 Winchester, 416 Remington Magnum