308 normal difference in case volume / thickness.

[pinne65]

I've exclusively been buying Nosler custom comp 175gr bthp ammo and reloaded it afterwards. I might have bought 168 gr once. But I'm not sure since I don't have the box any more.

While checking the cases during the reloading process I found a 15gr difference in weight between 20 of the cases and the other 100. I'm suspecting the 20 heavier ones possibly are from the 168 grs I bought once. The case volume is noticeable less. They almost overflow with the load I put in the "lighter" cases.

My question is if this difference is normal and to be expected between different lots from the same manufacturer.

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[Member 5605]

Yes.
That's why people buy one lot number and weigh those for similarities.