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Old March 27, 2010, 10:31 PM   #1
Tacoma
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IMR4350 vs H4350?

Is there much difference. I See in some load tables that they have slight variances in safe max loads but can't find out much more.
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Old March 27, 2010, 11:20 PM   #2
sk330lc
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AA4350 - IMR4350 - and H4350 Are all Very Close in burn Rate. I have used all Three. They all act a little diff from each other. So Pick the one you can find and work up a load using it and see what happens.
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Old March 27, 2010, 11:23 PM   #3
Jim243
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Flip a coin, they work the same.

Jim
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Old March 28, 2010, 05:27 PM   #4
Linear Thinker
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I caught flack for saying it on TFL and other forums, but my testing indicated that the load data for IMR, Hodgdon and Accurate versions of 4350 is interchangeable. I got similar velocities with similar SD for all 3 powders, all other variables being equal.
LT
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Old March 28, 2010, 06:32 PM   #5
bobelk99
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I have used all 3, and I have found some variations, with slightly smaller quantities of H being required for best groups.

If you are not loading max, and are not after bench rest type groups, either will work well.
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Old March 28, 2010, 07:17 PM   #6
Tacoma
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Thanks Gents, that s'planes it just fine.
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Old March 29, 2010, 08:49 PM   #7
Slamfire
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Quote:
I caught flack for saying it on TFL and other forums, but my testing indicated that the load data for IMR, Hodgdon and Accurate versions of 4350 is interchangeable. I got similar velocities with similar SD for all 3 powders, all other variables being equal.
Accurate Arms told me that their 4350 was a ballistic copy of IMR 4350. My H4350 is a little different. All of these are so close that you should buy by price.
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