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Jon L
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by Jon L » Wed Jul 20, 2011 8:30 pm
silencertalk wrote:
4198 seems ok also, but use the H version.
Any particular reason why?
The reason I ask is wideners has bulk Swiss powder that is basically IMR 4198, but I don't know the differences between the H version and IMR.
300Blk
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by 300Blk » Wed Jul 20, 2011 8:42 pm
H has 1/2 the stick size. IMR has less hope of metering.
The Swiss stuff you are speaking of could be either.
Jon L
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by Jon L » Wed Jul 20, 2011 8:45 pm
silencertalk wrote: H has 1/2 the stick size. IMR has less hope of metering.
The Swiss stuff you are speaking of could be either.
Thanks Robert.
What is your preferred sub-sonic powder?
300Blk
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by 300Blk » Wed Jul 20, 2011 8:52 pm
So far A1680 or RE7 for ARs and seems like 4198 is about the same but I have not done much testing.
82nd airborne
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by 82nd airborne » Wed Jul 20, 2011 11:18 pm
1/4oz of RDX works nicely for supersonic. It will get a 220g up around 3,000 fps if you compress it reaaal good!
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Alangaq
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by Alangaq » Thu Jul 21, 2011 5:01 pm
silencertalk wrote: H has 1/2 the stick size. IMR has less hope of metering.
The Swiss stuff you are speaking of could be either.
Robert IMR 4198 and Hodgdon H4198 have slightly different burning rates and are not 100% interchangeble load to load. I also think the extruded powder kernals are essentually the same dimention... perhaps you are thinking of H4198SC which stands for Short Cut?
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300Blk
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by 300Blk » Thu Jul 21, 2011 7:29 pm
Alangaq wrote: I also think the extruded powder kernals are essentually the same dimention... perhaps you are thinking of H4198SC which stands for Short Cut?
http://www.hodgdon.com/extreme.html
"The kernels were shortened for improved metering"
BachelorJack
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by BachelorJack » Fri Jul 22, 2011 3:18 am
silencertalk wrote: So far A1680 or RE7 for ARs and seems like 4198 is about the same but I have not done much testing.
What's your data for RE7?
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300Blk
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by 300Blk » Fri Jul 22, 2011 7:56 am
Like anything else - start with a lot, over 11 grains, and then load down to 1000 fps.
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by 82nd airborne » Fri Jul 22, 2011 9:44 am
I think I was using 11.3g or RE-7 with a 220 smk loaded to 2.090"
Regards,
Aaron Fouraker
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Delta Company Arms, LLC
(918) 332-6503
[email protected]
www.deltacompanyarms.com
IN GOD WE TRUST.
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