Description Gold Medal cartridges ( Federal 210M Primers/ Federal GM210M Primers ) are built with the same high-quality primers that have made them the preferred choice of match shooters and hunters across the world. Federal Gold Medal Primers are constructed to high standards and made with Federalâs patented basic lead styphnate priming mix, which provides the best primer ignition available on the market. Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.