For me it is an absolute. I use a Hornady L-N-L case length gauge and cartrage for measurement for each new bullet brand and type and weight.
That gives me the MAX OAL for that bullet "IN MY RIFLE". It would be different in YOUR rifle. From that OAL I back off 0.050 inches and that is the OAL that will place the bullet 0.050 off the lands.
Simple.
Jim
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Si vis pacem, para bellum
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