Castman,

I have the Hodgdon Manuals and they don't have any cast bullet data for the 458 Win Mag. I don't have a Lyman manual but I will check at the local gun shops and see if I can find it.

Also, I checked Midway and found a variety of cast bullets from 500 to 600 grains. Look under the listing for Rifle Bullets and then look under .45 (which would be for 45-70) rather than 458 Win. The diameter is the same.

Thanks again for the info and the response.

SD Shooter