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RD tests his loads in REM brass, so in all fairness you could modify your rounds according to the brass you use.

I load a 420 NOE (very similar boolit) over H4198 (similar to RL7) and his data shows 41g max, but I use WIN brass and I loaded my rounds at 42g and could have gone a bit higher.

He takes the time to pressure test these things, so if he says max is at "X" point, I believe him.
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