OK I see how all this got going. Apparently you have to spell out even the obvious. You said it your self earlyer. ALL THINGS BEING EQUAL. I was comparing apples to apples not apples to oranges.Same case same crimp ,same wad,same primer,same payload. the only to significantly increase or decrease velosity is to change the powder. Now I will admit to being a little lazy but I did check Sherman Bells data and it comfirms that when all else is equal that an increase in powder increases velocity and preasure.
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