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I need some help. I have recently started loading for a .416 Rigby. My goal is simply to duplicate the original Kynoch ballistics. (Yea, I know it can be loaded a lot hotter.) The present Kynoch website shows a muzzle velocity of 2300 fps with a 410 grain bullet out of a 26 inch barrel. However, in John Taylor's book AFRICAN RIFLES AND CARTRIDGES, he shows a muzzle velocity of 2350 with that same 410 grain bullet. Here is my question. Do any of you have any old Kynoch literature that would show the original ballstics? I have a hunch that the original ballistics were established in a 28 inch barrel and that the ballistics shown on the web site are the same but established in a barrel that was two inches shorter. Dave 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). | ||
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there uses to be a copy of the original 416 rigby-kynock letter floating around... 410 at 2380 opinions vary band of bubbas and STC hunting Club Words aren't Murder - Political assassination is MURDER Information on Ammoguide about the416AR, 458AR, 470AR, 500AR What is an AR round? Case Drawings 416-458-470AR and 500AR. 476AR, http://www.weaponsmith.com | |||
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Jeff, do you have any recollection of what barrel length that Kynock used to establish the original ballistics? Right now, I am getting 2295 but my CZ has a 25 inch barrel so I think that I am probably in the ball park. Dave 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). | |||
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The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores Original Rigby Ballistics
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