Temp. resistant slow-burning powders?

[fmajor]

Which (if any....) slow-burning powders tend to less reactive to temperature?

If someone were loading for a high-case-capacity round, a big .338 caliber for example (not sure it matters which caliber....) and planned on hunting in different climates, which powder would be most likely to work in different temperatures?

 

[royinidaho]

The key words in your post are "tend to be."

Hodgon Extreme powders and I suppose IMRs tend to be less influenced by temperature.

Ball powders, in my experience, seem to be the most temperature sensitive.

Reloder 22, the only Reloder I use seems to be greatly influenced by temp.

FWIW

 

[Joel Russo]

The key words in your post are "tend to be."

Hodgon Extreme powders and I suppose IMRs tend to be less influenced by temperature.

Ball powders, in my experience, seem to be the most temperature sensitive.

Reloder 22, the only Reloder I use seems to be greatly influenced by temp.

FWIW

Good info Roy.
I have found that H50BMG works extremely well in the large, .408 case, with the heavy .338 dia bullets.

 

[fmajor]

I also found RL22 to be temp finicky (i used to have .300 WM which *loved* 71.3gns of it under a 190grn SMK).

Thanks for the info!

 

[fatrack]

I tried US869 which is supposed to be temperature insensitive (in a big .338). My experience led me to try other powders. I think this is a great powder it just didn't work as I had hoped.

I have found that there is no powder that burns the same at -30 and 85. If you want accuracy you must dial for temperature.