Originally Posted by
rigpiggy
1 pound =7000 gr ergo 1oz is 437.5 gr Easy ke formula is (V*V)*min grains/450240) so your above 1oz shotgun slug at 1600 fps is about 2487 fpe And that is quite a stiff load not 80,000
Worth checking the numbers, one pound is 454 grams, not 7000.