If you stick with the same profile and length as the factory barrel you'll have an O.D. of .562" +/- .005" at the muzzle and you'll have less than .105" of wall thickness for the last 1-1/2" of the barrel. That .562" dimension extends rearwards about 1.5" so any barrel length from 22.5" to 24" long will result in the same wall thickness at the muzzle. Just a thought.
When Kimber announced the .35 Whelen Montana it was without much thought. Once they realized that it would require a new barrel profile which would require a new stock mold for Costa Rica the Whelen was quietly dropped. Kimber seems to "launch" quite a few products that get quietly dropped ... the Open Range Pro Carbon rifles for example.
