93gr Retumbo max. 94 gr and I have pressure problems.
300 SMK
I worked up loads with Retumbo from 89-94. 93 gave me the best accuracy of 1 MOA @ 1000 yards.

4000ft
SD 12
ES 24
ave 2820
temp 60
29.4 Hg
Lapua brass

Hope this helps but beware...93 grs is a hot load