IMR 4227 loads for the 256 Win Mag???? HELP

[savage99]

I have some OLD data for IMR 4227 powder in my 256 Win Mag Rifle but no modern data. Does anyone have any starting loads to max for IMR 4227 in a rifle for 256 Win Mag? /ubbthreads/images/graemlins/confused1.gif

 

[Spur]

An old hornady manual shows 13.6 starting, 16.1 max for imr4227 with their 60 soft point in a model 62 marlin. Showing 2800fps for the max load in the 24" barrel.

12 starting and 15 max for a 75 hp at 2500

I'm using 14.5 4227 behind the 75 hp in a 10" contender for 2100 and good accuracy.