223 WSSM Rechambering Suggestions

[TX COWDOC]

Howdy-
I bought my dad a Winchester Mod 70 in 223 WSSM back in 2005. Ammo is very hard to find and I'm looking to re-chamber / re-barrel to something else. I do reload but want to move away from the WSSM options. I suppose I can sell the rifle but it is really a beautiful rifle.
Thanks for the input-

TX COWDOC

 

[Edd]

Because of the length of the action and the diameter of the bolt face, you are pretty much stuck with the WSSM cartridges.