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Old January 2, 2002, 12:41 PM   #1
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Join Date: November 12, 2001
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Frozen Shells

I was thinking of leaving my ammo in my trunk. The temp here in MI is quite cold.

Does anyone know if cold exposure can effect the effectiveness of shells?

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Old January 2, 2002, 01:38 PM   #2
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Reloads with blue dot powder don't like cold weather. That's the only powder I know of with that issue
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Old January 2, 2002, 04:01 PM   #3
Dave McC
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You can get a good argument going at any range on this,Mike, but....

The technical guys mention velocity drops in shells kept in freezers on the order of 50-100 fps. Since best ammo varies up to 50 FPS shot to shot from one box, this may be so minor as to not warrant any concern.

I noted that zeroing a slug gun in temps from the mid 20s to mid 90s has no change in POI that I can pinpoint. I doubt there's that much change in shotshells, except for either very light loads or very heavy ones.On the extremes, variance produces more changes.

IOW, probably not....
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