Quote:
The Dillon would shake the brass when I advanced it so much that powder would com out of the cases and spill on the deck.
In 20 years I've never had this happen. Unless you've got the cases filled to the top and making compressed loads, I can't see how this occurs.
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He never said how he advanced it. I guess if you flicked the shell plate on a 550 fast enough, it could happen. The operator has 100% control over speed of index.
Ad far as powder check goes, you can't have one on a 550 unless you put it in #3 and seat and crimp in #4 but with the powders I use the measures always throw the same charge to the first decimal and the powder checks are sensitive to catch an exact (again to the tenth gn) charge except in a case with a slightly different internal volume.
Like this.
https://www.youtube.com/watch?v=6EU9deSKm48