New 2023 br chart...

[AJC1]

As one company owns more and more of the list one could expect the accuracy of the list to improve, as the same technicians in the same lab will be doing the same test on the samples...

Reference Data – Hodgdon Powder Company

hodgdonpowderco.com

 

[conan32120]

Seems they've added a few powders

 

[LiveLife]

Seems they've added a few powders

And removed some.

RIP IMR Target/Red/Green/Unequal ... https://hodgdonpowderco.com/wp-content/uploads/2023/04/updatedburnrateschart-1.pdf

 

[Cfish]

Interesting
Ramshot Silhouette is now listed as a fast pistol powder.
In the past it was a slow powder.
Hodgdon made a mistake

 

[black mamba]

Yes, at least in 44 mag and 45 Colt, both Silhouette and True Blue are much slower than listed, right in there with Herco and N340. Longshot is always listed as slower than in actual practice.

 

[jmorris]

“Brand“ of powders might confuse a number of people.

There are a number of “Brands” that are all made at General Dynamic’s St Marks plant.

 

[Skgreen]

Nice to see some new powders. I used to enjoy looking through different Burn Charts trying to learn something. Now, they're just fun to look at.

 

[AJC1]

Yes, at least in 44 mag and 45 Colt, both Silhouette and True Blue are much slower than listed, right in there with Herco and N340. Longshot is always listed as slower than in actual practice.

Yep both slower than unique and herco.

 

[Walkalong]

Interesting
Ramshot Silhouette is now listed as a fast pistol powder.
In the past it was a slow powder.
Hodgdon made a mistake

It's a medium speed pistol powder, always has been. It's also been a "forgiving" powder, so I would not expect it to move to a faster spot in the chart.

 

[Walkalong]

I just looked at the chart, and I agree, it doesn't belong in between the powders it is on that chart.

 

[GeoDudeFlorida]

Burn rate charts are interesting topics for discussion.

That’s all.

 

[AJC1]

Burn rate charts are interesting topics for discussion.

That’s all.

I don't think they did testing this go round to place powders....

 

[nettlle]

I look at burn rates when selecting powders for my M1A. If I hot rod it too much I may bend an operating rod. Operating rods are expensive.

 

[MEHavey]

Burn Rate charts only tell you burn speed at the start of ignition.
They tell you nothing about the change in speed with pressure rise.
They tell you nothing about where that speed change stops with pressure rise.
They tell you nothing about much energy/unit mass is produced for the different powders.

They're colorful.... that's pretty much it as far as it goes.
Take care.

.

 

[nettlle]

So the difference between the powder with the slowest rate and fastest burn rate is meaningless? Is that what we are saying here?

 

[AJC1]

So the difference between the powder with the slowest rate and fastest burn rate is meaningless? Is that what we are saying here?

Basically if it's not accurate it's useless, and that chart sux

 

[nettlle]

...and the burn rate charts in my reloading manuals are equally as worthless?

 

[fxvr5]

Hodgdon's order is not consistent with some manufacturers' order.

Alliant lists BE-86 as between Unique and Power Pistol, but Hodgdon has BE-86 (#39) listed as slower than Power Pistol (#34).

Also, Hodgdon has updated the list as per May '23, though I don't know where it is on their website.

 

[AJC1]

...and the burn rate charts in my reloading manuals are equally as worthless?

I have a book called propellant profiles. It's pretty good, helping understand each powder. I'm a study of them because it interests me...

 

[AJC1]

Hodgdon's order is not consistent with some manufacturers' order.

Alliant lists BE-86 as between Unique and Power Pistol, but Hodgdon has BE-86 (#39) listed as slower than Power Pistol (#34).

Also, Hodgdon has updated the list as per May '23, though I don't know where it is on their website.

They own the market, if they could get it right that would be gooder

 

[MEHavey]

the difference between the powder with the slowest rate and fastest burn rate is meaningless?

No... but it tells you nothing about what -- or how much of -- that powder will actually do once the
primer goes off in different cartridges, under different bullet weights, at different working pressures.

See also https://www.thehighroad.org/index.p...-create-unpublished-loads.752605/post-9480086

.

 

[nettlle]

Maybe I am missing something but that's not what I am expecting from a burn rate chart. Only the slowest to fastest. No more.

 

[MEHavey]

that's not what I am expecting from a burn rate chart.

Excellent.

I wish that were the universal view taken by many of those who've otherwise/repeatedly asked the question:
". . .can I substitute X for Y... ? They're right next to each other on the chart.... "

Therein lies the problem.
Without actual manuals which ("usually") list fastest to slowest as loads are listed going down the page.. . .
Or the likes of QuickLoad (which can list multiple powders/loads/volumes/pressures/burn efficiencies for a given cartridge/bullet/speed....
. . . one is flying blind


QuickLoad is really nifty that way: Tell it what velocity, pressure, fill %, (etc) you want

and it will tell you every combination of powders/load-weights/results can be had w/ every component in its library

 

[nettlle]

Understood. I respect the information shared here in respect to caution. It's one of the many reasons I consider THR reloading information the best of all the gun forums.

 

[AJC1]

Excellent.

I wish that were the universal view taken by many of those who've otherwise/repeatedly asked the question:
". . .can I substitute X for Y... ? They're right next to each other on the chart.... "

Therein lies the problem.
Without actual manuals (which "usually" list fastest to slowest as loads are listed going down the page.. . .
Or the likes of QuickLoad (which can list multiple powders/loads/volumes/pressures/burn efficiencies for a given cartridge/bullet/speed....
. . . one is flying blind


QuickLoad is really nifty that way: Tell it what velocity, pressure, fill %, (etc) you want

and it will tell you every combination of powders/load-weights/results can be had w/ every component in its library

That is exactexactly why I recommend grt that is free...