I dont think you will have a problem with the aftermarket barrel mounted to a target action. I picked up a 30" 1:12 twist target barrel from the classifieds and it mated up fine to a (pawnshop donor ) Model 11 300wsm action. The intent was to rechamber it to 300wsm; then I changed my mind at the last moment.The bolt head and firing pin will probably have to be changed to the short action magnum configuration. I have heard that Sharp Shooter Supply has those items. I had to go a different route to obtain a magnum bolt head ,but used the same firing pin ;I also reset the firing pin protrusion . I am almost finished with a 300wsm on a small shank with a rechambered .308 1:10 twist barrel.
There are some builds from a model 16 and other wsm actions being built, in the same manner as refered to in your last sentence. They sold the sporter barrel and stock to offset the cost and installed a match grade barrel in the length and contour of their choosing.
I almost went that route but wanted a lighter build to hunt with also.
Bookmarks