Yes, I did. I figure if the Dillon measure is mechanically being reset the potential for a squib is almost none, and with the indexing on the 650 the potential for a double charge is almost none, and with the drop of Clays a double would be spilling over. I still plan to use the powder check on rifle cases that I cannot see down into.
I had seen those and had contemplated that angle. (ETA: I was at the beginning of a run of loading 3k and decided since I had three F funnels on hand I could butcher one of them and see how it worked rather than order something and wait)
I have been using the Lee dies, and one reason people like them is because they are alleged to size a little extra small. The rounds have been utterly reliable, but I wonder if they might be holding onto the powder funnel just a little extra tight?
For rifle I have been using the Hornady measure, and they have been giving pretty good drops, even with Varget. And 223 loads with Varget is another thing that started me deviating from the Dillon measures, I got some rounds that I presumed bridged in the funnel, and this is also why I started using the powder check as well (I changed to the 650 in 2016, it wasn't an option on the 550s I had before then).
Yeah, I probably should reiterate that this is a tweak that makes the operation smoother, not fixing a problem that makes the loader or the rounds not function. I got my first 550 in 1984 and have loaded 380, 9mm(lots), 40(lots), 38, 357, 45(lots), 44, 223 and 300BO. The only real Dillon problem I ever had was dropping that Varget through the Dillon measure on the 550 when the powder check wasn't a potential option, and that was probably just a bad idea in the first place. But I have never enjoyed the way the flaring works, and this is just chasing an alternative setup that smoothed things out.