I started playing with 143 ELD-Xs using RL16 and -26.

RL16
42.5 2679
43 2710
43.5 2745
44 2762

Best accuracy based on a single three shot group was at 1” for all three groups. Not really great.

RL26
Worked up to 48 which showed 2737 on my Magnetospeed. Actually two shots, 2738 and 2736. A single three shot group was .58”. Worth trying again to verify.