Powder chart

Yes these charts are available.

I didn't check it 100%, but I'm pretty sure this one is still pretty up to date. I use it all the time, its very handy.

http://bulletin.accurateshooter.com/2018/08/get-latest-powder-burn-rate-chart-here/

I would like to see a chart. That shows where Alliant sport pistol places.

CoalCrackerAl said:

I would like to see a chart. That shows where Alliant sport pistol places.

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https://www.shootingtimes.com/editorial/alliant-sport-pistol-powder/99181

"Jared Hinton, communications coordinator for Alliant Powder, describes Sport Pistol as "a low nitroglycerine, double-base flake propellant. On the burn rate chart, Sport Pistol would functionally replace/overlap with American Select. ... "

I feel like this one is more accurate with the powders I’m familiar with.

https://loaddata.com/Article/BurnRateCharts/Powder-Burn-Rate-Chart-NEW/159

AJC1 said:

I was thinking of making a powder chart that starts with something like a burn rate chart and adds all the other information we all want. I would think having form factor ball/flake/extruded and single or dual base would be great information to have and not take up more than two extra characters on a line. Of course those things can rapidly spin out of control as once you get more you want more, does said chart already exist. Having a spreadsheet to play with would afford endless possibilities and volume per grain like the lee loader chart would be nice.

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Just copy the Hodgdon chart which I think is about the best and then insert a column for the type of powder.
Of course some powders are not yet on there.

AJC1 said:

That was my plan I just wanted to see if there was one out there already

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I don't know of one.

I'm sorry, but that bulletin.accurateshooter burn rate chart is the most inaccurate one I've ever seen. It's got Silhouette and True Blue as faster than Accurate #2. And there are many others; for your own safety, don't use it.

Hook your peepers into this one...

http://www.theballisticassistant.co...021/03/Powder-Relative-Burn-Rate-3-9-2021.pdf

I believe there are at least five burn rate charts that while close are all slightly different. You could refrence all of them and formulate a master chart adding the info that means something to you. There are others here that would like to see that done if you were willing to share your work.
The chart that got me going was where 231 and HP38 were seperated by two other propellants. They are exactly the same as verified by the distributor.

black mamba said:

I'm sorry, but that bulletin.accurateshooter burn rate chart is the most inaccurate one I've ever seen. It's got Silhouette and True Blue as faster than Accurate #2. And there are many others; for your own safety, don't use it.

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How is it dangerous?

Just remember every lot is going to be a little different. So it's highly possible that it could move 4-5 places just depending on lot. The reason it's not a good idea to use a general table as a powder substitute. It will give you idea but you still have to come up with load data. And the test they use to determine the rate is not chamber, open cup.

M-14 said:

Hook your peepers into this one...

http://www.theballisticassistant.co...021/03/Powder-Relative-Burn-Rate-3-9-2021.pdf

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I've got a copy of this one, and refer to it alot.

I like the format, and the inclusion of many powders (Shooters World for one) that is not on many charts.

M-14 said:

Hook your peepers into this one...

http://www.theballisticassistant.co...021/03/Powder-Relative-Burn-Rate-3-9-2021.pdf

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Accurate provides a very similar burn rate chart without all the weirdo powders...

http://www.accuratepowder.com/wp-content/uploads/2010/12/burn_rates.pdf

Granted, it does not include Shooters World, as Wooda points out.

black mamba said:

And there are many others; for your own safety, don't use it.

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As someone else pointed out, it seems like all burn rate charts have their differences, even charts from leading manufacturers. If you are using a burn rate chart to extrapolate into loading data, you have problems anyway. It's one of the reasons I hate the linear (numerically, in order) charts... they really don't offer that much useful information.

Lyman's 50th anniversary powder manual does a nice job of all that although it's no longer up-to-date with all the new powders that we can no longer get.

I think a chart with the additional information proposed by AJC1 would be nice. Country of origin might be nice to have as well.

CoalCrackerAl said:

I would like to see a chart. That shows where Alliant sport pistol places.

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Check out the chart in the link @MakBaba posted. It’s the first time I’ve seen it listed.

Hooda Thunkit said:

I've got a copy of this one, and refer to it alot.

I like the format, and the inclusion of many powders (Shooters World for one) that is not on many charts.

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Along with being the most complete chart I've yet to see, the best thing is it gets updated, the current one being 3/9/21. Most manufacturer charts gloss over "new" powders entirely.

fxvr5 said:

How is it dangerous?

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Right or wrong, lots of reloaders extrapolate data from burn rate charts: "If powder X is slower than powder Y, then any load with Y is safe with X." Absolutely not true, but it is done. If done with the accurateshooter chart, it could be disastrous.

black mamba said:

Right or wrong, lots of reloaders extrapolate data from burn rate charts: "If powder X is slower than powder Y, then any load with Y is safe with X." Absolutely not true, but it is done. If done with the accurateshooter chart, it could be disastrous.

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Not right or wrong... it's just wrong. If done with any chart, it could be disasterous.

Honestly, in all the years I've been reloading, I've never swapped a powder and used other data for it, or assumed because a powder was faster or slower using an established weight of another powder is fine. Powders are islands unto themselves (with the rare exception of duplicate powders like W231/HP38, et al.) That's why I hate those linear charts... sure, Universal is slower than Unique... but it doesn't tell you by how much. Further, just because powders are next to each other, doesn't mean they burn the same... IMR4227 and W296 come immediately to mind.

That accurateshooter chart and many others are nothing more than the one put out by Hodgedon, it is pretty much useless for anything other than a coarse gauge and it's dated 2019.

I have been working with a ballistic software program for a few years now to develop load models for everything. I can say with certainty that between simulation and real world testing, the ballistic assistant chart is the very closest one I have yet to see/use. I don't know what intervals it is updated, but it was done in March of this year.

My opinion based on my experience so take it as you may.

I found where sport pistol is. Thanks for posting a chart with it. I like the powder. Always wondered where it ranks in burn rate.