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I stumbled upon this chart in African Dangerous Game Cartridges by Pierre van der Walt today (pg. 221). The chart does not have attribution so I cannot cite a source for or vouch for the chart's origin. I have seen the conversion ratio for RL15 before and it was as listed below (I believe that was in a Ross Seyfried article), but had not seen conversion factors for other powders. IMR7828 = 1.40 RL22 = 1.37 S-385 = 1.35 IMR4831 = 1.33 IMR4350 = 1.25 S-365 = 1.24 RL15 = 1.19 S-355 = 1.17 Useful information for developing regulating loads for older rifles with modern powders. Mike | ||
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Valuable info. Thanks, Mike. I needed the Somchem conversions! Cal PS. I've been working on a conversion from Black to Blue Dot for the bore rifles. I believe it is in my new book and I will be fine tuning it this coming shooting season. _______________________________ Cal Pappas, Willow, Alaska www.CalPappas.com www.CalPappas.blogspot.com 1994 Zimbabwe 1997 Zimbabwe 1998 Zimbabwe 1999 Zimbabwe 1999 Namibia, Botswana, Zambia--vacation 2000 Australia 2002 South Africa 2003 South Africa 2003 Zimbabwe 2005 South Africa 2005 Zimbabwe 2006 Tanzania 2006 Zimbabwe--vacation 2007 Zimbabwe--vacation 2008 Zimbabwe 2012 Australia 2013 South Africa 2013 Zimbabwe 2013 Australia 2016 Zimbabwe 2017 Zimbabwe 2018 South Africa 2018 Zimbabwe--vacation 2019 South Africa 2019 Botswana 2019 Zimbabwe vacation 2021 South Africa 2021 South Africa (2nd hunt a month later) ______________________________ | |||
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You can also find conversions in G Wright's book.. | |||
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Well damn, I must have missed that. I know he talks about the RL15 conversion factor in his book, but I did not recall seeing the factors listed for other powders. Where is it in the 3rd Edition? Mike | |||
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Thanks Mike! Rusty We Band of Brothers! DRSS, NRA & SCI Life Member "I am rejoiced at my fate. Do not be uneasy about me, for I am with my friends." ----- David Crockett in his last letter (to his children), January 9th, 1836 "I will never forsake Texas and her cause. I am her son." ----- Jose Antonio Navarro, from Mexican Prison in 1841 "for I have sworn upon the altar of god eternal hostility against every form of tyranny over the mind of man." Thomas Jefferson Declaration of Arbroath April 6, 1320-“. . .It is not for glory, nor riches, nor honours that we are fighting, but for freedom - for that alone, which no honest man gives up but with life itself.” | |||
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Mike I'm on the road and wont be home till Friday, I know he has conversions for RL15 and I believe 4831 when I get home I will try to find it. | |||
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