Temperature Effects on Powder

While the subject of powders is on the table and now that winter is coming upon us, What powders are most affected by cold? I know that Vihtavuori is but what else? 

Bill

I shot the same charge of n310 and bullseye in 70 degrees as well as 0 degree. It ran sluggishly but functioned mostly the same.

(snicker)

I don't have any powder that works below 40. Well, unless I am elk hunting..

I run 3.4 gr BE majority of the year/time. In Phoenix when shooting mid-winters got down to low 40’s. Wouldn’t lock back the slide on last shot and ejected rds stayed on shooting bench. Ran 3.5 better.
Jon

Up the charge 2 or 3 tenths and run a thin lube.

If your'e into the details of temperature affects, google Denton Bramwell. He wrote many interesting articles for the long gone Varmit Hunter magazine on that subject..

Here is the velocity and pressure variance allowable for M882 9mm Ball ammo from the military specification.  Since our powder and primers are similar we should expect similar results as a percentage since we don’t run the same pressures.  One caveat is that powders with heavy deterrent coatings have been problematic in RIFLE applications when using small primers in 308 sized cartridges in cold weather.  The only powders like that in Pistol are SOME ball powders.