So you can have a 120 grain ?magnum? load with two of these
pellets. With two Triple Seven Magnums you can achieve
an additional 200-250 fps. In 26? in-line barrels with a 250
grain projectile. This will normally result in muzzle velocity of
approximately 2,000 fps. Designed for use with 209 shotshell primers only.
Black Powder and Substitutes