I agree. I've got some loading to do.
I haven't decided whether Lehigh or hard cast will be my bear load.
I'm encouraged though. Thanks to @mtboz, we have an explanation for why the heavy lead loads cause FTFs, and a solution that appears to work: heavy mag springs. The magazine falling out issue was a big surprise to me, and got me to the "fuck this gun" point. Fortunately, the 460 Rowland folks know about that too, and have a solution: shims.