The first data I posted in my note, was for a pre #42 manual.
That must date in the 40's, maybe 50's due to the war.
You should easily be able to extrapolate some loads straight from 6.5x54 data for 160gr. jacketed bullets.

To do that, pick a manual that shows both cast and jacketed, as Lyman does. See the co-relationsip between a 140gr. jacketed and the 140+gr. cast loads.
Apply that relationship to the 160gr. Jacketed starting loads and you are off to the races.

Further cast bullet manual I have, is the Lyman Cast Bullet Handbook which came out in 1972 or 73.
6.5x54 loads in it only go to the 143gr. bullet as well. #266469

The loads are virtually identical to the ones I posted from the Lyman #45, 1970 manual.