Are you looking for full power loads or mild blasting ammo?
I would not recommend those HSM bullets for full power loads in the 460, unless they have a gas check. If they are like most other 250gr cast bullets of that design, they don't, and are intended for the relatively slower velocity of the 45 Colt. You can push them fast, but should expect leading and a significant amount of lead particles in the air after the shot.
I mentioned a 300gr load above with 13gr of SR7625; I ran some more this weekend with the same charge and 250gr cast bullets. That worked equally well; I don't remember exact velocity but they were somewhere around 1150-ish in my revolver.
Last edited by Yondering; 08/01/16.
