Skip Sackett
US Veteran
If there's "shaking" and "panning" going on, I don't see why.
Probably because someone read the instructions!

http://www.leeprecision.com/cg.../instruct/PT1023.pdf
You shake or pan to orientate the primers in all one direction. With the Lee AutoPrime, the little dimples work great. With the Dillon and the "swirl" pattern of the device, they don't flip so nice. Your method would work much better.
Although, since I now use Wolf primers almost exclusively, all you have to do is dump them out as packaged, right side up for pickup tubes!
How come it took the Russians to get that part right?