The Forster Co-Ax press is one of the top presses on the market the LS Shellholder Jaws are required when loading specific cases that will not work with the standard jaws provided with the press.Notes: For reloading the following cartridges 218 Bee, 22 Hornet, 25 ACP, 7.62x54mm Rimmed Russian, 38-40 WCF, 348 Winchester, 378 Weatherby Magnum, 416 Rigby, 45-70 Government, 45-90 (and others using that case base)