My .257 likes IMR 4350 with 100 gr. bullets too although it also likes IMR 4064. I have been loading 39.5 gr. IMR 4350 with 100 gr. Nosler BT, just ordered some 100 gr. Partitions and will try them with 42 gr. IMR 4350 a load that has been recommended to me as being very accurate.
