4350 is too slow for the 8mm. varget, any of the 4895 powders, or rl15, 4064 work the best. And remember this, data out there is for low psi so in case it is stuck into a 0.318" bore pre 98 series of rifle.
Shoot the European ammo and you will see the difference. Shoot the Turk ammo to see the original load.