Does anyone have data for 500 grain cast bullet loads in a 458 lott?

I was hoping to use XMP5744 powder, but any data would be appreciated.

Thanks.

Their website lists data for the 458 win. which of course you could use in the longer case safely. Good combo, I use this powder in my 416 Rem with a 375gr RNGC and it is a pleasure to shoot as well as accurate.

Vihtavuori N310 Powder (start at about 8gr and work up to you get the accuracy and velocity you want)...Rem 2 1/2 Primer. I use the same load with 7gr in my 450 Marlin bolt-action.