I have plenty of the same LOT of RL26 and it is working real well, I have run the numbers on RL17 and I am not willing to loose 80 fps with the 143 as long as I can get good SD and groups at the speeds I am getting. So won't be trying RL17 at this time.
I will be playing with COAL and I have some GM215M primers to try, I should be able to close up the groups and reduce SD if all goes well.
Using the G7 BC for the 143 ELD-X it will require 70" MOA for 1 mile and for the 130 ELD-M it will require 80" MOA for 1 mile.
I know real world may require more but I can do up to 84" at 30 power and 90" at 20 power with my set up.
That's not bad for a 6.5 Creedmoor.
I am hoping the 130 JLK VLDs will allow me to gain a bit in velocity and still have low ES and SD with good groups. We will see.