Thank you for this posting, co-incidentally I am working on similar loads. Reliable data for RL26 is not easy to find right now. Earlier this year I worked up a load with RL 25 and 162 ELD-X. The best result for my rifle (Browning X-bolt 26") was
69.0gr of RL 25 .018 off the lands at 3031fps. Of course, RL25 and RL26 aren't the same thing. but they seem to be pretty close in burn rate.

Dogshooter, you are making me feel like I'm on the right track because I just loaded a ladder from 64.0gr. to 68.5gr. of RL26 with accubond 160gr.

It may be a week or so before I can get to the range, but if it's still relevent after I do I will post my results.