Maybe this will help some. I have a 6.5 JDJ, not the #2, and I really like it. I have had good luck with RL 15 using the 100 and 120-grain Nosler BT's and the Speer 120-grain Hot-Cor. All of the these bullets have produced 5-shot groups around 0.8" at 100 yards from the bench. Varget is a close second with the 120-grain BT. Bummer about the load data from SSK.
"Those who hammer their guns into plows will plow for those who did not."
The Second Amendment is in place in case the politicians ignore the others.
General Dwight Eisenhower