Had the same question. When comparing the standard to the AI data max loads for some powder is only half a grain more in the AI which should produce less pressure than the standard does with half a grain less. Almost a - P load. But I have also heard of the same load producing higher velocity in an AI case which doesn't make sense unless the shoulder angle alters burn rate and/or pressure.
"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli
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