The 3BR Handgun Metering Chamber Insert provides precise powder measurement with a 0 to 10 grains capacity range specifically designed for handgun reloading applications.3BR Metering Insert for handgun ammunitionPrecision metering chamber with 0 to 10 grains capacityDesigned for accurate powder dispensingCompatible with handgun reloading equipmentEssential component for reloaders who demand consistent and accurate powder charges for handgun ammunition ensuring reliable performance and safety in every reload.