H322 and cold weather

[schloss]

I can't remember for sure, but I was thinking I had heard something about H322 not responding real well to cold weather. Does anybody know? What powders are the best "all temp" powders?

[Float Pilot]

I used it in 6.8mm SPC down to 15 below zero and it worked just fine. In fact it is the best powder for the 110 grain bullets in the 6.8mm.

[tjen]

Hodgdon Extream Powders are designed just for temperture stability and H322 is an extream hodgdon powder. Mag primers are one trick used for extream cold temps.