The Hornady #10 book has them. I haven't looked at the 243, but with 270 win Hornady just groups them with the other 140 grain bullets. By which I mean they give you the same data as they do for 140 gr sst's and interlocks. The one difference is the COAL, which they have posted here:
https://press.hornady.com/assets/pct...1522702377.pdf
I have also used the Hodgdon 270 win 150 gr load data for the 145 gr eld-x which worked fine.