In the interest of not having my gun blow apart in my face I contacted Lyman as regards using their load data with BB,BBB and T lead shot.Here's their reply-
Yes it would, however it may be difficult to get the shell to crimp properly as the larger shot size would take up more room than the smaller shot we used to develop the load.Depending on the exact load, we used either #6, #4 or #2 shot.You may need more wad pressure to get the crimp to fold properly.
Yes it would, however it may be difficult to get the shell to crimp properly as the larger shot size would take up more room than the smaller shot we used to develop the load.Depending on the exact load, we used either #6, #4 or #2 shot.You may need more wad pressure to get the crimp to fold properly.