I just bought a set of Lyman Pro series dies from Scheel's got a awesome deal 189.00 for the set these things are pretty nice I especially like the crimp die which is micrometer adjustable for pretty repeatable taper crimp. I also have been living under a rock because I was not aware of the M series expanders that Lee and Lyman are using all my older dies are RCBS and Redding and have the taper style plugs so I bought a bunch of Lyman M series expanders and set up for 40/10 mm and they are so much better IMO than the flare style plugs especially for gas checked bullets which I do load a lot of. I sent RCBS a message about replacing my old plugs with the new style especially for my original 454 dies and he said they were on order so I will replace the plugs when I can get them. Anyone here using them ?