Remington Ammunition 22628 Centerfire Primers Benchrest Rifle 100 Per Box (Sold as Brick). Remington 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 reliable ignition from -20 degrees to +150 degrees, pellet weight controlled to .01 grams and metallic dimensions controlled to .0005. Specifications: Brand Remington Ammunition Weight 0.820 kg Dimensions 4.1 x 2.8 x 1.7 cm Model Centerfire Primers Purpose Rifle Series Benchrest Type Primer Material Universal Size Small Rifle Style Small Benchrest Gun Type Rifle Quantity 100 Per Box Recommended Usage Reloading