Wow guys - I posted that almost 6 years ago. A lot has happen since then.
Anyway, I settled on the Skip Shims and they have worked perfectly for me for almost 6 years now. The key for me was to set the FL die with the .010 shim with a firm die contact to the shell holder. I simply increase sizing by replacing that shim with a thinner shim. In all cases, the ram cams over. My press in almost 50 years old and it has a lot of play in it so maybe that's why this set up works best for me.
When I started using the Whidden Gun works single piece bump gauge, I started obtaining more consistent bump readings. For me it's easier and more repeatable than using the Wilson gauge and dial gauge.
Since I reload for ten different 223 Rem bolt rifles, and 4 different 243 bolt rifles, the shim system works best for me. Each rifle's dedicated cases have a designed shim number written on the cartridge box. As cases age, I sometimes have to change the shim size to obtain the desire set back.
I tried a friend's set of Redding Competition Shell holders but they didn't work for me. Two were off from the inscribed value on the shell holder. In addition, I found it difficult to obtain the desire set back with them on some rifles.
Interesting enough, I found that the old German Salazar "O" ring method works quite well too. If you have only one or two rifles in the same caliber, it works amazingly well. However if you have as many rifles as I have in the same caliber, that method can become complicated trying to determine the correct 'sharpie' line on the press to move the FL die to for that rifle.
And guess what, the old method of using the rifle chamber to set the FL die also works quite well for a single rifle.