There is no doubt that the old style AA and the new HS AA are different in volume. I had a mixed batch and it caused me fits for a while. I had to adjust my press to accommodate the HS. Once I separated out the two different vintage hulls the problem went away.
A side note though is that my current batch of HS hulls are on their 4th loading. This summer I had 3 instances (red hull) out of 3000 where the case tube separated from the brass head. I'll be watching closely when I reload this winter. I never had that happen with the old style hulls.
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