For several years I have reloaded;.308,22-250;.223,.45ACP;44 Rem.Mag and 38 special with Redding dies and an RCBS Rockchucker press.But this 9MM stuff is different.My once fired brass comes from my G17 Gen3 and has no sigificant buldge with factory barrel. One of the 1st lessions I learned the hard way is not to bell case mouths or crimp them.Doing both of these operations on Federal or Winchester brass I am able with sufficient hand pressure force 115 grain XTP's further into the case.Eliminating both operations I am absolutely unable to force bullets further into the case.The only way I could accomplish any reasonable degree of set back was to lighty hammer on the back of the case with a rubber hammer (no primer). The result of avoiding these two operations must provide greater case neck tension on that portion of the seated bullet. I went cheapo route on the 9MM dies to start and was ready to can them and purchase a set of Reddings because of the set back I was finding at first.I gave the Lee's a second chance and threw away the expander die and eliminated the taper crimp and no set back. I don't feel I have found anything new.