Those are great groups Elk, I have 2 1/2 boxes 143 ELDX factory ammo left and have 200 143gr ELDX bullets to load, am hoping I can duplicate the factory ammo groups
I tried some 142gr NABLR but just couldn't get them to shoot with any of the powders that I had, RL26 was and mostly still is no existent and I have never tried any, RL25 seems to work well, good velocity and not bad accuracy.
As I said before Retumbo and US869 both worked well, and the good thing is I have a good supply of each so don't have to run around looking.