Buy Federal 209 Primers available in Stock Now .Ignition is everything in muzzleloading. That’s why Federal Premium® developed the 209 Muzzleloading Primer to complement B.O.R. Lock MZ® bullets. The formulation provides superior resistance federal 209 muzzleloader primers to moisture, as well as hot, reliable ignition of both federal 209 muzzleloader primers granulated powder and pellets in any conditions. The design eliminates the excessive breech fouling typical of standard shotshell primers.