Mike, in the primers I have measured they were the same size as Winchesters and were stepped.
Federal 209A .239-.242 dia.
CCI 209 .240-.242
Rem. 209P .241-.242
Cheddite 209 .240-.243 stepped, most consistent in size
Win. 209 .240-243 stepped
Fiocchi 616 .243-.244 *
Rio type 209/G600 .244 *
Nobelsport type 209/686 .243-.244*
* readings taken by someone else
The stepped ones are the easiest to seat because of this.
This was a few years ago and I don't believe they have changed.
Last edited by JDW; 04/15/13 05:17 PM.