Thread: 200 grain cast bullets in .357 magnum cases

Heh. Just got a response from ADI. It was a nice letter, but did not have the answer I am craving for. They wrote: "Unfortunately we do not have any test load data for .357 Magnum with 200 grain lead
projectiles". They explained that I could experiment with Trail Boss. They did not respond at all to my statement that I had figures for Unique powder which appears on the ADI chart as a close equivalent to ADI AP70N. Fair enough, I understand the position they have to take.