Remington Ammunition 22628 Centerfire Primers Benchrest Small Rifle RifleRemington Benchrest centerfire 7 1 2 small rifle primers is a group of subcomponents assembled to exceptionally precise tolerances. Primer cup dimensions are controlled to four decimal places. The priming mix is specially formulated for consistent ignition with a wide variety of powder types and tested for reliability. A unique tripod anvil design creates a larger "sweet spot" with maximum sensitivity, even with off center firing pin strikes. Features