I need some help. I am looking for load data for the 356 Winchester usung IMR 4064 behind a 200 GR. Projectile. Can anyone help me?

.356 Win is an underloaded .358. Were it me, I'd cut the max .358 load by 20% and work up to about 90% of the .358 load. Translated, that would mean starting at 40.0 grains of 4064 under a 200 grain bullet and working up. I would not go past 45 grains and if I hit even slightly sticky extraction, I would cut two grains from the load.

But that might be just me.

IMR-4064 From 45.0 grains to 48.0 grains
CCI-200 Primer