Sounds like a shooter!

When I first started looking at building a big bore thumper style I looked at the 450 BM, the 458 SOCOM, 50 Beo etc. I liked that the SOCOM used the 458 bore and the bullets available but having a shoulder bars it's use for hunting here (IA).

I also wanted to start casting for this project as it seemed a good fit and was fortunate enough to find Accurate Molds and their extensive catolog, this is the mold I ended up going with and while I'm still in the load development stages I'm very happy with it so far:
http://www.accuratemolds.com/bullet_detail.php?bullet=45-400A-D.png