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Brad Kilgore

03-03-2009 01:50 PM

Powder question????

What is the difference if any, in Hodgdon, and IMR powder? Example: Hodgdon 4198, and IMR 4198. Are they exactly the same, or is there some different characteristics. I am going to load for my 45-70.

skeeter 7MM

03-03-2009 06:22 PM

RE: Powder question????

Even though they are both owned by Hodgdon they have different formulations, burn rates, colume densities, etc. H4198 is part of the Hodgdon's Extreme Powder line which is suppose to be less temperature sensitive(cold and hot). You should not sub H for IMR data(receipe) and visa V.

eldeguello

03-09-2009 06:43 AM

RE: Powder question????

Quote:

ORIGINAL: Brad Kilgore

What is the difference if any, in Hodgdon, and IMR powder? Example: Hodgdon 4198, and IMR 4198. Are they exactly the same, or is there some different characteristics. I am going to load for my 45-70.

Even if "exactly the same", you still have to work up loads tobe safe. Even two different lots of H4198 may be slightly different, etc.

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