The Hornady Lock-N-Load AP Progressive Press Shellplate comes in a variety of options depending on the type of cartridges being reloaded. However all of the shellplate products are made from quality material and designed to provide years of outstanding service.By using any of the Hornady shellplates changing calibers can be done easily when using the Lock-N-Load Press. However the shellplate also works on the older model of the Projector Press. Simply choose the product according to caliber and the reloading sessions can begin.