Loading for the 460 is not much differnt than any of the other pistol cartridges. As stated above a good crimp is nessecary to prevent bullet jump and cyclinder lock up. Just compare your crimp with one from a factory reload.

H110 is the most commonly used powder and produces good results with all the bullets I have used to date. Note as stated do not load below 3% of max with H110 as it performs poorly below this point and becomes very dirty.

A9, 2400, IMR4227 all produce shootable accurate rounds.

I no longer shoot casull or colt through my guns as you can load the same bullet to the same performance level in the 460 brass and save yorself all the cleaning and will have improved accuracy- the colt has a half inch jump to the forcing cone.

The hornady XTP bullets shoot poorly when driven to 460 S&W velocities- use the XTP MAG or dont drive them faster than 1400 fps

All the Barnes bullets have produced (200, 225, 250, 275, and the 325 Buster) have shoot well from my guns.

The speer bullet 300 performed on par with the 300 Hornady 300 XTP MAG on paper

I have taken a number of animals from pigs to Bison with the 460.

It's a great cartridge and revolver- Have fun.

There are several threads on this forum with more load data and information.