Let me chuck in one other possible option. Savage has a custom department you can call: (413) 568-7001 ext 4399 for Special Orders. I once asked what it would cost to get a 10 FCP-K in 6.5 Creedmore, and I was told it would be somewhere south of $200 extra.
Basically, if you see a Savage model in a given caliber, you should be able to get it in any related caliber they use (even in another model) for a minimal charge. The 10 FCP-K comes in .223 and .308; that implies you should be able to get a special order for .260, .243, 7mm-08, 6.5 Creedmore - any cartridge in the .223 or .308 family that Savage makes a gun in.
Of course, with the recent run on guns and supplies, a custom order might take a bit longer than usual...
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