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Old June 3, 2006, 12:03 AM   #4
Join Date: March 21, 2006
Posts: 67
I've got a few rifles in 7mm/08. Two of them are 22 inch barrels and one is 18.5. I find that there is usually about 80 fps difference between them, so about 20 fps/inch. Of course every rifle is a rule unto itself so other rifles and other cartridges could vary quite a bit.

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