I stand to be corrected, but I think he is just online sales now.
He is still around, and I've seen him log on here occasionally in the classifieds. Maybe he will see this.
A bit late to the parade, but I can vouch for Missouri Bullets, particularly the softer version - Bnh 10-12.
I have used the 44 Cal in 44 Mag, up to about 1300 fps. I did put on a coat of 45/45/10, to mitigate any potential leading issues. I had no troubles, leading or otherwise.