Any 7.35 Carcano load data for 170gr RN?

I am looking for some bullets for reloading my Carcano. Iconclast is selling me some 150gr bullets. No problem there. Another user has contacted me with some .299 170gr RN Soft points. I would like to try these as well, but my manual only lists data up to 160gr. Anyone have any for 170gr? If there is none to be had, I might try taking the 160gr data, reducing it, and using a chronograph, working up the load to around 2000fps as the 160gr data is for 2200 fps. Ideas? Info? Thanks.

"...hit your enemy in the belly, and kick him when he is down, and boil his prisoners in oil- if you take any- and torture his women and children. Then people will keep clear of you..." -Admiral of the Fleet Lord Fisher, speaking at the Hague Peace Conf