WARNING: Discharging firearms in poorly ventilated areas, cleaning firearms, or handling ammunition may result in exposure to lead and other substances known to the State of California to cause birth defects, reproductive harm, and other serious physical injury. Have adequate ventilation at all times. Wash hands thoroughly after exposure. For more information go to www.p65warnings.ca.gov/.
Extensive testing with a variety of commonly-used reloading powders has shown that 209 Premier STS primers, compared to other commonly-used primers, create reductions of up to 40 percent in the high-to-low spread of velocities in reloads. This improvement in velocity consistency is an important benefit to those reloading target loads for practice or competition.