I love this kind of poor man technology. Anything home rolled is better than store bought. Dangit, I had a couple thousand 40 S&W brass and traded it off. That's not a very big shopping list to add J 44's to the lineup, I think I may just put this on the list and try some.
I'M wondering if I took one of your 44s if I could bump it up to .451 on my Corbin press (s dies). Prolly too hard to.