-18 c the last couple days in montreal. -32c with the windchill. T7ff & win 209 primers gave me no trouble in these temps. The patches are the problem. Use pure alcohol to swab or patch freezes to bore. On the other hand, you don;t have to worry about the barrel over heating! But things are warming up for the weekend. -2c average. P.S. Don't leave home without insulated coffee mug. Coffee's cold before you could put sugar in.