matt_allen,
If you talk to the bench rest shooter at Hornady you will find he tried the .22-243 and the .22-6mm Rem. He discovered the .22-6 gets about three times the accurate barrel life.
If after you talk with him you decide on the .22-6 I will sell you my reloading dies for less than any you can find for sale. I moved on to other projects now.
