Thread: Random pressure signs?

Originally Posted by Woody

Interesting. Cold shrinks metal. The relative differences in coefficients of expansion of the several metal involved, e.g. barrel, brass, bullet would change things like neck tension and case capacity, even headspace. Loaded close to limits, these combined factors may have a more noticeable cumulative effect than with a more mild load.

Had the same thought, will be interesting to try putting the remaining rounds thru when its a bit warmer and see if there is an issue.

I the mean time would folks keep using the load? slightly heavy bolt lift and light extractor mark. Or do I need to look for a different winter loading (would be a ball ache!)