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  #1  
Old 02-05-2009, 10:57 AM
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Imr 4831 Vs H4831


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I know that according to the burn rate chart, IMR 4831 is #98 and H4831 is #101. Is there much real difference between the two powders?
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Last edited by scottg; 02-05-2009 at 10:59 AM. Reason: Misspelling of words
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  #2  
Old 02-05-2009, 11:35 AM
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The IMR version is indeed faster, and data is NOT interchangeable.

Now, not to confuse things, but those two have an interesting history. Originally, there was just 4831. It was made by Dupont and intended for the 50 BMG during the Big War.

After the war, great quantities of the powder was left over, some from stocks never loaded and some from surplus ammo that was pulled down. Most of it was sold in bulk to the public. One could find barrels of the stuff at gun stores, and they'd scoop out a paper bag full for 50 cents. It proved to be very popular.

When that supply largely ran out, both DuPont (by then called IMR) and Hodgdon decided to order new batches of it. That's where the difference came in: IMR made the new stuff to match the ORIGINAL specifications, and Hodgdon had its manufacturer meet the specs of the surplus powder - which had lost some of its potency over the years, but which reloaders were now used to. Since then, both companies have stuck with their decision.

So now we have the very slow Hodgdon variety, and the slightly more spunky IMR version. Depending on how you view it, they are both made to the original recipe!
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  #3  
Old 02-06-2009, 01:37 AM
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Either way, I like this powder - especially the Hodgdon SC.
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  #4  
Old 02-06-2009, 02:16 AM
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It might be my imagination but I personally think the IMR powders burn cleaner than the Hodgdon. Just my 2 cents.
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  #5  
Old 02-06-2009, 03:11 AM
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I have and use both powders. Given the perspective data, I should be able to get them same basic results with either powder. My pressures and velocity should be vary close. I know that 54.5 grns if IMR 4831 will not be the same as 54.5 grns of H4831.

Sometimes, here lately, finding powder is getting hard. Just trying to figure out all my options here. I have a big powder order in, just waiting for it to ship.
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DPMS LRT (SASS)
Ruger MKII M77
Redhawk 44 mag 7.5"
Springfield XD40
Beretta PX4 Storm
Bushmaster M4 ORC
Bushmaster M4 A3 carbine
Too many others to list.

"The strongest reason for the people to retain the right to keep and
bear arms is, as a last resort, to protect themselves against tyranny
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  #6  
Old 02-06-2009, 03:59 AM
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So now we have the very slow Hodgdon variety, and the slightly more spunky IMR version. Depending on how you view it, they are both made to the original recipe!
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  #7  
Old 02-06-2009, 04:14 AM
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I've been using IMR-4831 in the 270 Weatherby Mag, but when the pound I have is gone, I'm not replacing it.
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  #8  
Old 02-06-2009, 04:20 AM
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I found 8lbs of IMR 4831 and ordered it. I will use what I need and the rest I will just keep.
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Introduce a kid to hunting, the American way depends on it.

DPMS LRT (SASS)
Ruger MKII M77
Redhawk 44 mag 7.5"
Springfield XD40
Beretta PX4 Storm
Bushmaster M4 ORC
Bushmaster M4 A3 carbine
Too many others to list.

"The strongest reason for the people to retain the right to keep and
bear arms is, as a last resort, to protect themselves against tyranny
in government."


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  #9  
Old 02-06-2009, 07:27 AM
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Quote:
Originally Posted by scottg View Post
I have and use both powders. Given the perspective data, I should be able to get them same basic results with either powder. My pressures and velocity should be vary close. I know that 54.5 grns if IMR 4831 will not be the same as 54.5 grns of H4831.

Sometimes, here lately, finding powder is getting hard. Just trying to figure out all my options here. I have a big powder order in, just waiting for it to ship.
Scottg, In all of my testing, I consistantly get higher velocities from IMR 4831 in medium bottleneck cases i.e. 30-06, .280 and that class of cartridge. H-4831 is definitly slower burning and performs best in cases of larger capacity such as 300 Win mag class and up. The same holds true for me with Reloader 22, at least with my guns with the current batches of powder I have. I can almost guarantee that you will want to keep every kernel of that 8lb. container you have on order once you start testing over a chronograph. I hope this helps. Salt
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  #10  
Old 02-06-2009, 09:10 AM
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I like H4831SC better because it meters very well, but I'm not buying anymore because Reloder 22 works much better for me.
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  #11  
Old 02-06-2009, 01:32 PM
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"IMR 4831 is #98 and H4831 is #101. Is there much real difference between the two powders?"
No offense but puzzled; Not a lot of difference of course, but why would you think the chart makers listed them as different burn rates if they were not different?
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  #12  
Old 02-06-2009, 04:42 PM
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Even though they have different numbers, and H414 and W760 are seperated by a large number yet they are the same powder, same thing with H110 and W296... also depends on whose chart you look at. Its a mess out there.
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  #13  
Old 02-06-2009, 05:00 PM
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Also bear in mind that IMR Powder Company is now owned by Hodgdon. Apparently their manufacturing is being kept separate for some reason or they feel there is enough of a following for each brand to make sense to keep them separate.
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  #14  
Old 02-06-2009, 05:04 PM
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Hodgdon stated from the beginning that they wouldn't eliminate IMR's powders. 4831 and 4350 are probably the best selling powders for both companies.
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