Sounds like they discourage use in leveractions. The energy is just shy of that of the PMC +p+ load. Sounds like a real wallopper from a bolt gun of double. They have some other cool looking loads as well. Thanks for the link! Corbon makes a hunting loading in a 350 BC Flat Point at 1800 fps that should be a good levergun option. I have used those in a guide gun, as well as the PMC with no problems. My mauser likes the PMC.