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    • #27595
      • Bronze
      • Posts: 18
      • Comments: 74
      • Overall: 92

      well, I guess this powder is ok after all for replacing sr4759. The further I get away from 4759 the easier it is to forget the good ole days and work with the replacement or whatever they tell me it is. To be honest I kinda like the stuff. I think it is better with midweight slugs for caliber, but that might be in my head. I do believe if I have a can of 4227 and some h4895 at my bench I am happy as always!

    • #27598
      Rattlesnake Charlie
      • Gold
      • ★★★
      • Posts: 152
      • Comments: 679
      • Overall: 831

      I had read several places where AA-5744 was to be the closest powder for replacing 4759, but looking at densities and burning rate, maybe 4227 is also a possible choice. I wish there was a powder of low density with similar burning characteristics. I like “fluffy” in big cases like the .45-70.

      IMR SR4759
      Burn Rate: #69
      VMD: .0993 (cc/gr)
      Density: 10.070 (gr/cc)
      Comments: Bulky powder for reduced rifle loads

      IMR 4227
      Burn Rate: #71
      VMD: .0769 (cc/gr)
      Density: 13.004 (gr/cc)
      Comments: Magnum pistol, .410, .22 Hornet, .221 Fireball

      Accurate 5744
      Burn Rate: #72
      VMD: .0752 (cc/gr)
      Density: 13.307 (gr/cc)
      Comments: Reduced loads, low pressure rifle, .50 Sharps

      I wonder if Steel is suitable. It certainly is fluffy. Especially when compared 2400.

      Alliant Steel
      Burn Rate: #62
      VMD: .1063
      Density: 9.407
      Comments: 10 ga & 12 ga steel loads, magnum shotshell loads

      Alliant 2400
      Burn Rate: #63
      VMD: .0742
      Density: 13.477
      Comments: Magnum handgun, some rifle & shotshell loads

    • #27651
      Kevin S
      • Bronze
      • Posts: 14
      • Comments: 58
      • Overall: 72

      Charlie on your list of powders you list density. What does that represent concerning powder? The other properties of powders I am familiar with.

    • #27729
      • Bronze
      • Posts: 13
      • Comments: 46
      • Overall: 59

      i believe that is the weight of the powder per cc of powder example #2400 is 13.477 gr, per cc so a heavier powder vs. a light fluffy powder per volume

    • #27731
      • Bronze
      • Posts: 5
      • Comments: 71
      • Overall: 76

      In my experience 4227 does better under compressed charges in 44mag, I think it has a narrower sweet spot on the pressure curve than many powders in order to perform well, and have noticed that if you back off and shoot soft loads it tends to get dirty especially in my 357.

    • #27732
      • Silver
      • ★★
      • Posts: 23
      • Comments: 84
      • Overall: 107

      In the 8mm Mauser, I started with 17 grains and a 200 grain bullet and worked up until most of the neck sooting was gone. Best accuracy with minimal sooting occurred around 20 grains and approx. 1750 fps.

    • #27745
      Rattlesnake Charlie
      • Gold
      • ★★★
      • Posts: 152
      • Comments: 679
      • Overall: 831

      The lower the density, the more “fluffy” the powder is.

      Lead is more dense than steel, copper, and rocks. That’s why they float when smelting.

      VMD (volumetric density) is the inverse of “density”.

      In most cases, the closer a case if filled to 100%, the more uniform and consistent the results will be.

      In many cases, where the amount of case filled is low – especially with some slower powders – ignition is sometimes erratic and large variances in velocity may result.

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