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Paul B. · September 25, 2000, 05:46 PM

Just a point to ponder. Alliant has taken over the manufacture of Hercules sporting powders, and IMR has taken over the manufacture of DuPont's sporting powders. Loads with Hercules #2400 are now way too high in my .44 magnums and .357 magnums. I had to reduce the .44s by 2.0 gr. and the .357s by 1.5 grains. In the case of IMR's powders, a pet load for the 30-06 with 150 gr. bullets had to be reduced by 2.0 gr.
Why the increase in burning rate? I don't know, but if you run out od Hercules or DuPont's versions of their powders and go to the newer powders, be damn careful using your old data. It might prove to be damaging to you gun, and maybe your body parts.
Paul B.

September 25, 2000, 05:46 PM	#5
Paul B. Senior Member Join Date: March 28, 1999 Location: Tucson, AZ Posts: 3,802	Just a point to ponder. Alliant has taken over the manufacture of Hercules sporting powders, and IMR has taken over the manufacture of DuPont's sporting powders. Loads with Hercules #2400 are now way too high in my .44 magnums and .357 magnums. I had to reduce the .44s by 2.0 gr. and the .357s by 1.5 grains. In the case of IMR's powders, a pet load for the 30-06 with 150 gr. bullets had to be reduced by 2.0 gr. Why the increase in burning rate? I don't know, but if you run out od Hercules or DuPont's versions of their powders and go to the newer powders, be damn careful using your old data. It might prove to be damaging to you gun, and maybe your body parts. Paul B.