Not my data, Barnes using their 1:10 Wiseman 24" bbl, max accy load 86.6 gr. Magnum, 9 1/2 primer, vel 3,247 fps.
Their load is compressed. With my 3.6" mag box, chamber throated accordingly for longer COAL, this load may not be compressed. Magnum is a dense powder.
Shilen barrel on the Damara is 24" plus brake.
I haven't yet loaded/tested 165/168 TTSX's, but plan to.
Will report.
DF