Even using a dummy round for each bullet style I load, I've found when I buy another new lot number it makes sense to recheck those loaded rounds.
I had an experience with Hornady 7mm 175gr bullets where they completely changed the bullet design, and the cannelure was in a different spot. That obvious difference caused me to recheck the over-all length to the ogive (I call it OAL-OG) and the new design clearly seated differently. Since then I double-check by measuring the first round out of a new lot. It seems Nosler rarely gives me this problem. Barnes was frequent, even in the same box of the same lot!! Hornady SST vary little, if at all.
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