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I have been following the crown debate since you I met on site, there is that other post here on site where the guy cuts a barrel from full length to like 4 inch's with a hack saw and reports back on each step, also noting velocity loss.
I said when he finds his group goes from 2.5 MOA to 2 MOA because he may gain some betterment, but I doubt it will be near the clover leave wished for.

Nice link, very unbiased writing style me thinks.