Nice find! Is this for your 6.5 SAUM with 142 ABLR? If so, you will find that RL33 and VV570 are the "pixie dust" for those rounds. RL26 is still great, just a little fast. For a 6.5 Creedmoor and similar it's for sure RL26.
I would consider tradIng some toilet paper for a few thousand grains of that RL-26. I hear I can launch a 100 grain Speer @ 3,200 FPS with that stuff outa my .243!!