New Brass 10grn Heavier?

[mattri]

Just weight sorted some new 7mm-08 WW brass. Brand new in 50 round bags, production date unknown.

Previous lots have all weighed 155/156grn on average, this new brass comes in at +/-167grns.

Brass looks good, is consistent etc. just seems kind of heavy. Thoughts?
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[CharlieNC]

Check the water capacity, that is most important.

[stangfish]

If you old brass has been trimmed a few times and the pockets uniformed ever couple of firings, I can see it.