Lock-N-Load 50 BMG Single Stage Press Standard Shellholder Adaptor392172NEW!!The Hornady Lock-N-Load 50 BMG Single Stage PressStandard Shellholder Adapter is a great accessory for your Lock-N-Load 50 BMG press.This shellholder adaptor allows you to reload any standard caliber ammunition on the Hornady Lock-N-Load 50 BMG press.The long ram stroke works well for reloaders who are loading longer cartridges