I normally expect variation to occur lot to lot. The projectiles are spewing off a lot of die lines operating side by side all at different states of wear. Also the the lot to lot variations may not always be down to die wear eg my 7mm 180gr Hybrids didn't match Berger's spec sheet. I check before starting a new lot which in my case is important for my target rifles as I load jammed.
I also try to buy as many packs of 100 of the same lot # as I can afford, which in some cases is not many.
The worst I experienced was about 15 years ago with my 6mm MK projectiles where they were so bad in a single box I had to batch them. I know a lot of target shooters batch boxes at any rate even when the quality is high.
Bookmarks