Powder temp “stability” chart???

[Elktrack]

Anyone know of a chart or something that ranks the temperature sensitivity of different powders?
I’m evaluating several powders and curious how they rank against each other in the temperature sensitivity category.
It’d be cool to have a chart similar to a burn rate chart but for temperature sensitivity.

 

[elevatorman]

That would be sweet to have. Right now I just simply don't buy powders that are not temp insensitive. By labeling from manufacturer. Like winchesters staball or hodgons extreme powders

 

[Dan-06]

I like vihtivouri n 555. I don’t know of any chart that you are after. I would love to have one though.

 

[Potsie]

I don’t think there’s a published “Chart” that I know of, but I believe Hirnady’s 4Dof program has a setting to compensate for temp stability. Not sure how it’s measured or what, I haven’t played with it much.

 

[Sheltowee]

This thread might help: https://www.snipershide.com/shootin...change-per-degree-on-various-powders.7152849/

I try to stick to the Hodgdon Extreme powders if at all possible due to their temp insensitivity. I'm usually doing most of my handload development in the summer around 90degrees and most of my rifle hunting in the 20-40degree range.

 

[Elktrack]

I’ll check out that Hornady site. I’m wondering if I’m overthinking it as usual. Probably going down another rabbit hole where I obsess over details that won’t manifest any better results. Been there. Temp stable is a newer thing in the big picture of my reloading anyway. According to the “experts” I’ve been using garbage powders that aren’t capable of accuracy. Good thing I never knew that before. The thousands of rounds I loaded and shot with ball powders must have been anomalies. Haha. I guess if I was trying to get a long range precision load or bench rest competition loads it would be more important but in all reality I seldom shoot past 300.

Does it really make enough difference??

 

[Wind Gypsy]

I thought it was listed somewhere in quickload as well? I've never had it.

Hard thing to put values to because it seems to be impacted by pressure and cartridge as well. So a mild load might not have the same temp stability as a high pressure one.

 

[elevatorman]

I’ll check out that Hornady site. I’m wondering if I’m overthinking it as usual. Probably going down another rabbit hole where I obsess over details that won’t manifest any better results. Been there. Temp stable is a newer thing in the big picture of my reloading anyway. According to the “experts” I’ve been using garbage powders that aren’t capable of accuracy. Good thing I never knew that before. The thousands of rounds I loaded and shot with ball powders must have been anomalies. Haha. I guess if I was trying to get a long range precision load or bench rest competition loads it would be more important but in all reality I seldom shoot past 300.

Does it really make enough difference??

my thought on this is I reload primarily for guns I'll hunt with. I need that gun to be as consistent from a 5 degree day to a 75 degree day as possible and to some extent help protect a perfectly safe full power round at any normal temp from becoming dangerously over pressure if say it got hot sitting in my truck or if I shot a few times and it's sitting in a hot chamber. And if it's available and can offer a benefit for nothing else other than picking a powder that has that characteristic, why not?

If I was doing any form of bulk shooting or competitive shooting I wouldn't care about temp stability. I would just buy what was accurate and cheap. I shouldn't have said I only ever buy temp stable powders, that is true for all my rifles and hunting rounds, but I don't care for my plinking round powder for my revolvers. The goal there was lowest charge weight per case to stretch a pound out

 

[Elktrack]

my thought on this is I reload primarily for guns I'll hunt with. I need that gun to be as consistent from a 5 degree day to a 75 degree day as possible and to some extent help protect a perfectly safe full power round at any normal temp from becoming dangerously over pressure if say it got hot sitting in my truck or if I shot a few times and it's sitting in a hot chamber.

If I was doing any form of bulk shooting or competitive shooting I wouldn't care about temp stability. I would just buy what was accurate and cheap. I shouldn't have said I only ever buy temp stable powders, that is true for all my rifles and hunting rounds, but I don't care for my plinking round powder for my revolvers. The goal there was lowest charge weight per case to stretch a pound out

Same here. Pretty much every thing I load has to work from 0-85 degrees. I’m probably fixating more on this than I should.
A bit of homework on my end will help me figure it out. I’m going to enter some data and see just how much of a difference it will make.
This is what happens when winter hits and I have too much time to think.
Problem is that I have a supply of powders that aren’t in the temp stable category but have been proven to produce great loads.
It’s interesting how some of the load data actually recommends a few of these powders as being the better ones.

 

[Elktrack]

Reading the thread about ladder test and some other things has me wondering just how much better I could make a few loads that I have. The temp thing never seemed worth much attention before. I know serious accuracy guys that have dope for all that. I’ve never compiled dope to that extent. Which means I’ve never needed it before. If I was dialing to extreme distance I guess I would need to now