The 50/30 Pellets are designed for use in conjunction with 50/50 Pellets to tailor loads specific to a given rifle. The 50/30 Pellets may be used in any combination with 50/50 or other 50/30 Pellets in charges up to a maximum of 100 grains. Easy clean-up, just like Triple Seven granular powder. Designed for use with 209 shotshell primers only.