I've never had any luck with my GBBs in the cold except last weekend. It was rather nice out at about 2º C. I took my TM 5-7 to a game, and was absolutely amazed to see I could fire off 2 full mags at full power from 1 gas fill. I even lost one of my mags and found it about an hour later in the snow. Popped it into the gun, and fired all BBs off without issue. I was thoroughly impressed. However, this is my only plastic slide gun, so this may have something to do with it. I've tried pretty much all my other pistols in the cold, and had little luck with any of them.
I also tried my Inokatsu M4. No luck at all there. There wasn't enough pressure to cycle the bolt more than 5-6 times on a fill.
Last edited by Crunchmeister; February 23rd, 2010 at 14:56..