Powder Cross over equivalent chart

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Powder Cross over equivalent chart

Post by DavidR on Wed Jan 08, 2014 11:04 am

In today's hard times to find powder, this chart gives you equivalents to many powders used in our sport. Just posted as reference, use at your own risk.

http://www.adi-powders.com.au/handloaders-guide/equivalents.asp

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Re: Powder Cross over equivalent chart

Post by Rob Kovach on Sun Jul 20, 2014 2:16 pm

Hodgdon had this awesome burn rate chart:
https://www.hodgdon.com/burn-rate.html

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Re: Powder Cross over equivalent chart

Post by DavidR on Wed Jul 30, 2014 7:23 am

problem with the hodgon chart is it lists in a column and makes it look like powders are faster or slower according to where they are on the chart and the truth is many powders have the same burn rate, this is a better chart to use if looking for comparative powders, the clays international is the same rate as 700x and wst both excellent bullseye powders. Also some say wst is the same powder as international, being Winchester does not produce powder and is just a licensed name hodgon uses, just like hp-38 is w-231 just packaged different.

http://www.adi-powders.com.au/handloaders/equivalents.asp

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Re: Powder Cross over equivalent chart

Post by BEA on Wed Feb 24, 2016 2:22 pm

The problem with burn rate charts is that they are speculative, or in other words, educated guesses. None of these charts are arrived at by testing each powder in the same application to determine how they line up in terms of burn rate.  A characteristic of smokeless powder is that as the pressure goes up, the burn rate increases disproportionately faster. This is why you can get to a point where the pressures spike with small charge wt increases. The chemical makeup of a powder can determine how fast the burn speed increases as the pressure goes up. Some powders increase faster or slower than others. This simply means that you can make some general assumptions by looking at burn rate charts.  However, just because a powder is located at the same level as another on the chart does not mean that these two powders are indeed the same, nor does it indicate these powders will react the same in different pressure ranges.

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Re: Powder Cross over equivalent chart

Post by Aprilian on Tue Nov 01, 2016 6:27 am

Rob Kovach wrote:Hodgdon had this awesome burn rate chart:
https://www.hodgdon.com/burn-rate.html
chart moved - new [url=https://www.hodgdon.com/PDF/Burn Rates - 2015-2016.pdf]https://www.hodgdon.com/PDF/Burn%20Rates%20-%202015-2016.pdf[/url]

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Re: Powder Cross over equivalent chart

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