I'm running a 26" bbl Rem 700 S/A chambered in 7.82 Lazzeroni Patriot. The Patriot is somewhat shorter & fatter than the WSM but powder capacity should be pretty similar.
I started with RL-19 (Lazz factory ammo uses a lot of RL-19). Great accuracy & acceptable velocity with 150grn TSX & 180gr MRX. (FED 215M)
I am now using the 168 TTSX & 67.0grns of RL-17.... Velocity is well over 3300 (but I need to chrony test more). In a 5 shot group, i was able to stack 4 of 5 into almost zero vetical spread & less than 1/2" horizontal.... until shot 5 where I started gettin giddy... go figure
I pulled 5 out high right to .700" dern it...
RL-17 has shown greater velocity across the board (by a lot) however, in my limited experimenting, has not created the single digit ES & SD I was able to achieve with the RL-19. In conversation with John Lazzeroni, I am actually going to substitue the 215 for a 210 & see what happens....