My .375 Win:
220gr Horn FP / 33.0gr IMR 4198 / CCI200 = 1.5" @ 100
200gr Sierra FN / 32.0 IMR4198 / CCI200 = 1.5" @100

My load of Re-7 was too hot and it popped oen the bbl...I stopped!

I had the most fun loading Black Powder Round Balls over 9.5gr SR7625 but bullseye or x700 should work too.

There are a lot of onsite locations with loading data if you Google it.

Have fun,
Bill