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I've got a copy of an old Tolley ad that lists 1300fps for their 5 dram load with a 700gn ball. My own 5 dram Tolley does just that (1300fps) with 120gn of swiss FFFg. Everything else crossed.

Bob

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Bob,

so 700 grs x 5 drams x 1300 fps = 2627 ft lbs.

Bummer, not enough for BGRC Nitro 3 competition. Still need a .500 !

But just goes to show WHY the Nitro cartridges superseeded these old guns. And also if one would examine the lack of penetration of a round lead ball, why the early elephant hunters often had a "boy", oops, better say gunbearer (was just being historically correct), carrying a second one.