I still check lot to lot but don't find Bergers for example to be too inconsistant. Hornady a little less so. However, Berger could now drop the ball now they are owned by Nammo and are having trouble (or were recently) keeping their production up to demand.
Around 20 years ago Sierra 6mm 107 MKs were showing up with not just big lot to lot differences but big differences within one box. Some boxes I sorted into 3 distinct batches (ogive to base). Thankfully they picked up their game.
A product of the bigger makers running several machines side by side with dies either different to start with (unbelievable) or dies in different states of wear.
Supposedly each machine's output is kept seperate but found this hard to believe with my Sierra experience those years ago.
Bookmarks