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Re: marks on bullets
Posted by Dick Hosmer on Thursday, 28 July 2011, at 10:53 a.m., in response to Re: marks on bullets, posted by steven gabrielli on Thursday, 28 July 2011, at 7:46 a.m.
AFAIK, the reason noted in contemporary records for the adoption of the 500gr. bullet (an outgrowth of the failed Long Range rifle program) was the serendipitous and almost accidental discovery that the 405gr. loading was not burning all its' powder. Seems they did some (apparently unusual) winter test firing, and found a lot of unburned powder specks in the snow - or so the (perhaps apocryphal) story goes . . . .
Many combinations of powder and bullet were tested 1879-82. The most accurate (perhaps at least partly because of bump) proved to be the 45-70-500 combination.
The long-chambered .45-80 LRR had recoil issues, and was no more accurate than the service rifle. We greatly treasure the few surviving examples due to their extreme rarity, but other than for helping to bring the 500gr. bullet to the fore they were a technical failure.
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