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Original .375 flanged Cordite load?

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17 February 2012, 07:31
Dave Bush
Original .375 flanged Cordite load?
Does anyone know what the original Kynoch cordite load was for the .375 grain flanged with a 300 grain bullet? Graeme Wright says it was 56 grains of cordite but Taylor says it was 58 grains with the 300, 270 and 235 grain bullets.


Dave
DRSS
Chapuis 9.3X74
Chapuis "Jungle" .375 FL
Krieghoff 500/.416 NE
Krieghoff 500 NE

"Git as close as y can laddie an then git ten yards closer"

"If the biggest, baddest animals on the planet are on the menu, and you'd rather pay a taxidermist than a mortician, consider the 500 NE as the last word in life insurance." Hornady Handbook of Cartridge Reloading (8th Edition).
17 February 2012, 13:42
Ganyana
Load weights will have varied slightly with different lotts of chordite- and suspect Graeme's scale may be a bit more accurate than John's (although he almost certainly took that figure from a catalouge rather than weighing it himself). Powder also looses weight as it dries out (and chordite originally contained up to 3% water).

And yes, the Brits used one charge weight of chordite for all three bullet weights. Simple system....regulate rifle with 300grn and then co down in bullet weight until you get the next weight that regulates with the same charge. Because The powder had to be inserted before the case was necked down it was a real pain to change settings and the Brits kept it simple.

(after all they made one powder with an intrinsic burning rate similar to 3031 work in everything from .455 revolver ammo all the way through to 16" naval cannon)
17 February 2012, 19:09
Dave Bush
Thank's Don. I hope you have Pierre's new book. He has some great pictures of you in there. Wink


Dave
DRSS
Chapuis 9.3X74
Chapuis "Jungle" .375 FL
Krieghoff 500/.416 NE
Krieghoff 500 NE

"Git as close as y can laddie an then git ten yards closer"

"If the biggest, baddest animals on the planet are on the menu, and you'd rather pay a taxidermist than a mortician, consider the 500 NE as the last word in life insurance." Hornady Handbook of Cartridge Reloading (8th Edition).