I do reload 33 Winchester with 200 grain FNGC lead bullets. They are still available from Hunningtons,com $14.98 per 50 + S$H. Also the headstamped brass is available from graff & sons or you can resize and trim 45-70 brass, I use Winchester with good results.
Lee load data published: for lead bullets
170-190 grain IMR 4320 39.1 grains 2100 fps
180-200 grain IMR 3031 36.7 grains 2000 fp
180-200 grain IMR 4895 38.4 grains 2050 fps
180-200 grain H4895 38.4 grains 2050 fps
190-210 grain IMR 4064 38.0 grains 1900 fps
#3315 Hornaday 200 grain Jacketed FP published data from Hornaday I think these will work with the new 200 grain 338 leverevolution bullets when they become available.
H4198 34.5 grain 2000 fps
IMR 3031 40.0 grain 2100 fps
H4895 45.1 grain 2200 fps
WIN 748 43.2 grain 2100 fps
IMR 4064 42.1 grain 2000 fps
These are MAX loadings please start 10% low and work up
Max case length 2.105 inches I use 2.100 inches
Max overall length 2.795 inches
I am attempting to find a loading with Trail Boss that will work.
Hope this helped