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Rifles, Reloading, Optics, Equipment
Reloading
IMR's new line of powders....
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<blockquote data-quote="Doublezranch" data-source="post: 1036956" data-attributes="member: 32664"><p>I picked up the new Hodgon 2015 annual manual the other day because it featured IMR's new line of powders. There are 3 in the family and have been tested in 41 calibers. The powders are 4166, 4451, and 7977 respectively. IMR claims they are temperature resistant, clean burning, decoppering and 100% safe for the environment. </p><p></p><p>The fastest of the 3 is 4166. That is used in the 204 Ruger to 8 x 57 Mauser.</p><p></p><p>Next is 4451 and is used in calibers from a 243 to a 500 Nitro Express. </p><p></p><p>The third is 7977 and is for 6mm-06 through the 470 Nitro Express.</p><p></p><p></p><p>They did a test with 7977 and extreme temperatures. The gun was a 7 STW and the load was 78 grains with a 160 A-frame. COAL was 3.600.The first group of 3 was shot at -15 degrees and measured 1.29 cc. The next group of 3 was at 78 degrees and measured 1.34 cc. Finally they did a group of 3 at 140 degrees (stuck the loaded rounds in a jet boil) and they measured 1.20 cc. </p><p></p><p>Although these groups won't win a F-class championship, they certainly prove that these powders are indeed temperature resistant. </p><p></p><p>Too good to be true...you be the judge!</p></blockquote><p></p>
[QUOTE="Doublezranch, post: 1036956, member: 32664"] I picked up the new Hodgon 2015 annual manual the other day because it featured IMR's new line of powders. There are 3 in the family and have been tested in 41 calibers. The powders are 4166, 4451, and 7977 respectively. IMR claims they are temperature resistant, clean burning, decoppering and 100% safe for the environment. The fastest of the 3 is 4166. That is used in the 204 Ruger to 8 x 57 Mauser. Next is 4451 and is used in calibers from a 243 to a 500 Nitro Express. The third is 7977 and is for 6mm-06 through the 470 Nitro Express. They did a test with 7977 and extreme temperatures. The gun was a 7 STW and the load was 78 grains with a 160 A-frame. COAL was 3.600.The first group of 3 was shot at -15 degrees and measured 1.29 cc. The next group of 3 was at 78 degrees and measured 1.34 cc. Finally they did a group of 3 at 140 degrees (stuck the loaded rounds in a jet boil) and they measured 1.20 cc. Although these groups won't win a F-class championship, they certainly prove that these powders are indeed temperature resistant. Too good to be true...you be the judge! [/QUOTE]
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