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1)for 2 3/4 inch .577 BPE, with 160 gr black powder, and 520 gr lead bullet, in 28 in barrel, 10 tons pressure, for 1725 fps, and 3440 ft.lb energy 2)for 3 inch .577 BPE,with 167 gr black powder, and 570 gr lead bullet, in 28 in barrel, 10 tons pressure, for 1725 fps, and 3770 ft.lb energy Hope this helps PS The 3rd edition will be out soonish |