.222 rem case


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wj kerr
January 25, 2010, 07:31 AM
hello all have a question regarding case length am working up a load in .222 rem using h322 made 7 rounds at 21.6 grains 7 at 21.9 and 7 at 22.2 with rp new brass and cci 400 primers checked case length before reloading it was around 1.694 after i test fired all cases had shrunk to around 1.685 what is going on here. once again thanks in advance.wj.

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Walkalong
January 25, 2010, 07:55 AM
Normal.

Cases swell to fill the chamber, becoming both wider and shorter. Size them and they will narrow and lengthen again.

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