The solution I came up with for keeping S&W revolvers running in extreme cold was to very thoroughly clean them, including removing the sideplate, hose them down with Brakleen, then a puff or two of powdered graphite in the guts, replace the sideplate, pull the cylinder out and apart, clean it as above, then apply powdered graphite to the cylinder's moving parts. Don't use a lot as it can clump up with changes in heat & cold such as going in and out of warm places, and cause binding.
Doesn't surprise me about the Glock running just fine. The only time we had problems with any auto pistol was when they were dirty and lubed too heavily. A lot of fail to feed, light firing pin/striker hits, and Type 2 malfunctions.
Folks on the range with dirty/over-lubed guns got a lot of malfunction clearance drill practice.
Ed
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