Not a 220 fp, but here are a couple reduced loads.
Speer Reloading manual 11
Speer 235gr
SR4759
26.0 gr - 1500 fps
28.0 gr - 1599 fps
30.0 gr - 1701 fps
DuPont Handloader's Guide 1975-76
Rem 270 gr
SR 4759
41.5 gr - 2085 fps (Max load)
IMR 4227
39.5 gr - 2070 fps (Max load)
Win 300 gr Silver tip
SR 4759
39.0 gr - 1925 fps (Max Load)
IMR 4227
38.5 gr - 1935 fps (Max Load)
DuPont suggests the charge weights be reduced initially by 10% to compensate for possible variations from the data.
I haven't used any of these loads in a 375 H&H (never owned one to try it in), but I have used SR 4759 for reduced loads in:
264 Winchester Magnum
7mm Remington Magnum
300 Winchester Magnum
338 Winchester Magnum