Congrats on what should be a great rifle! Accuracy is pretty good (understatement) with the 142 ABLR and 156 EOL I've tested, with the 142 being a bit better on paper. Something to look out for, in my rifle at least, I had to neck turn cases down to .12". Watch for a tight chamber in yours...seems to be a fairly common issue, along with dies not properly full length resizing.
Regarding accuracy though, photo is of the final load I went with (hot load, don't start here of course):
142 ABLR - 56.8gr RL26 - 3083fps - single digit ES/SD - Bertram brass, neck turned, weight sorted, annealed, light crimp