I show the 150grn XBT with a max load of 58grns of 4350, so according to their TSX guidelines... that is a max load of 60 grains... but with 150 grainers.... so that could be a few grains high for 160 grainers.....
Hodgdon is saying that for nosler partitions (sorry to bring up noslers, haha) the max for 4350 is 59.5, but the TSX may generate less pressure (may) by design...
Second look... IMR4350 was 59.5, H4350 was 55.5....