Starting load for a 6.5-300 Weatherby Magnum using Reloder 25

[CENTURY]

Although there are probably better powders to use, all I have available now is Reloder 25.
Any help with a starting point for the Barnes 127 LRX and Reloder 25 will be greatly appreciated.

 

[Aussie Hunter Steve]

Using Fed215 primers in Weatherby brass, I get 3350fps with 76gr. It's down from max and might be a good starting point

 

[CENTURY]

Thank you I will try that