Good info. Please keep us informed of your results.
Not nearly as precise as your load tests, but I've run both in my 30--06. At first blush, I'd say they were capable of the same velocity but Re 26 takes 1-2 grains more to get to the same velocity. Their load data, at least for 180, 30-06 loads indicates more velocity with Re 26. I'm running more test loads with it next weekend. Accuracy wise it is right there with H4350 in my gun.