Buy Remington Large Rifle Primers Online. Each Remington primer is comprised of a collection of subcomponents built to extraordinarily tight tolerances. The dimensions of the primer cup are regulated to an accuracy of.0001 inches, and the priming mixture is precisely prepared for consistent ignition with a broad range of powder types. Primers are tested for dependability between -20 and +150 degrees Fahrenheit. The innovative tripod anvil design generates a bigger hit area with maximum sensitivity, even for firing pin impacts that are off-center.