4350 is one of the powders known to be used when SEE occurred. Reducing the powder charge with this worries me as reports are everything will look good, until it is not.
At least with the faster pistol/shotgun and medium rifle powders there is still a pretty reliable way to track case expansion and appearance of the primers.
The new Lyman Cast bullet manual has a load for the 8X57 with 190gr boolit, H4895, 35.5grs, 1,700 fps, 42.5grs, 2215 fps.