Originally Posted by Magnumdood
I think he put the powder charge he was using under the 190's into the case and put the Berger 230 on top of that.


This is what I think too.

Barrels have been known to split in extreme cold and this is why many barrel makers will not do pencil thin ones out of 416 stainless. I don't know if this would affect the action too possibly it could as the steel is less resilient in extreme cold.

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