Primers are created of a copper or brass alloy cup having a brass anvil and are crammed with an effects-delicate direct styphnate igniter. Hollow-charge primers do not use a case, but make the most of a bullet that is analogous to some pistol bullet but by using a round nose. https://vortexammoandsupplies.com/product/fort-smith-fsaap-50-bmg-boxer-primers/