I don't know where else to go, or who to ask. I have a 240 cobra wildcat the cartridge is made my necking up a 220 swift to 6mm. DOES ANYONE HAVE ANY NEW LOADING DATA FOR THE CARTRIDGE. The last time I loaded for this round I found loading data in Ackleys manuel. Thanx in advance anything is appreciated. Have a good new year to all, & most importantly God bless our troops.

try over at accuratereloading.com

Just a note.

If I remember correctly, the .220 Swift was formed by necking down the 6mm Lee Navy.
I am somehow sure that the Cobra is improved, but it is funny how things are reinvented.

The Navy could be a starting point

Tom