I have the 2016 data downloaded to my iPad. There's plenty of RL26 data for appropriate rounds, but I found nothing for 16, even under the short magnum cartridges they say it's good for. Didn't see it listed in a couple of burn-rate lists either. Guess you'll have to wait for the 2017 book.
On a related note, the new Handloader has a Brian Pearce piece with a slew (as usual for Pearce) of .243 loads. I was hoping for some RL 26 loads, but alas, I'll have to stick with the Alliant ones for now. One thing he stressed in his article was to follow the loads exactly as listed to avoid issues caused by substituting components willy-nilly. I assume the extra caution is due to the .243's fickle nature regarding pressures.
