Taurus- I haven't used PP enough/long enough to say definitely. As such it's never my only tool (of course, only a fool would rely on just one). I've seen videos of it being burned in the snow so I guess it's not affected overly by cold, but I find the glycerin gets too stiff to pour when it's really cold. Supposedly anti-freeze works, too, but I've yet to test it.
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman