Recently had similar issues in my mates prc and my 284.
Mates prc with superformance gave similar results to what you have got. Tracked down some rl26 problem solved. ES 6 and half moa.
My 284 with 162 eldm and Rl17 again similar results. Impressed by the rl26 I have some rl16 loaded up and ready to try.
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