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It depends.
In my 8x57 and 6.5x55, I load well over book maximum, because both are instrumented, and both are easily capable of handling 30-06/270 pressures. So I run them at 58 KPSI and below.
In my 41 Magnum, I load well below maximum, because I want a pleasant target load.
In my 243, which is also instrumented, I'm finding that in my particular rifle, book max is well below SAAMI spec. So I don't know how to count that one.
In my 30-06, I load right at book max, because it will probably get used for elk, where ample energy is more important than reducing groups by 1/4".
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