Temperature Sensitivity in Powders?

[G11354]

Im sure this is an old and tiring question but what powders show considerable temperature sensitivity?

Im specifically looking for input regarding "IMR 3031".

Im loading 60gn Hornady V-Max with 22.3gn of IMR 3031, max load is 22.8gn.

 

[xmanpike]

In my experience Hodgdon powders seem less temperature sensitive than IMR powders. I have had very good luck with Vihtavuori regarding temp and humidity swings.

 

[G11354]

In my experience Hodgdon powders seem less temperature sensitive than IMR powders. I have had very good luck with Vihtavuori regarding temp and humidity swings.

Are there any reliable articles regarding gunpowder temperature sensitivity?

 

[918v]

Go to snipershide.com for the most reliable temperature sensitivity into. They are all into long range shooting and breathe, eat, and poop temperature sensitivity.

 

[NCsmitty]

You can Google the question, and you'll be inundated with other questions and info.

You'll find that most of the older IMR powders like IMR3031 are temperature sensitive, and the only ones listed by Hodgdon, who owns the IMR line, that are not temp sensitive, is IMR8208 and IMR4198.
Although I have used IMR3031, most of my powder stock is Hodgdon Extreme brand for that reason.


NCsmitty

 

[PO2Hammer]

Hodgdon has a group of powders they call 'extreme' powders that are supposed to be as temperature insensitive as possible.

Also powders with a lower percentage of nitroglycerine are supposed to perform better in cold weather. Nitrocellulose loses less energy in the cold than nitroglycerine.

Perhaps that's why many of Vihtavouri powders are single base, being from a cold weather country.

 

[guntech59]

Sounds like you are loading for a .223 or similar cartridge. I have very good results using IMR 8208 XBR for both the .223 and 22.250.

no change in POI from (85 degrees to 25 degrees) out to 300 yards.

I'm going to chronograph the load this winter and again in the summer to confirm the speeds. It is touted and being extremely temperature resistant.

 

[35 Whelen]

It's a fairly simple thing: Single base powders, generally speaking, are less temperature sensitive than double base powders (you might note that Hodgdon's Extreme Line is all extruded, single base powder). Almost all extruded powders are single base, while to my knowledge, ALL ball type powder is double base.

35W

 

[Hondo 60]

Been using Varget for about 3 years.
It "might" be a frog's hair slower in the frigid extremes, vs summer, but it's pretty close.